diff --git a/homeassistant/components/abode/__init__.py b/homeassistant/components/abode/__init__.py
index 3407d387169..3da4155dafd 100644
--- a/homeassistant/components/abode/__init__.py
+++ b/homeassistant/components/abode/__init__.py
@@ -16,6 +16,7 @@ from homeassistant.const import (
     CONF_PASSWORD,
     CONF_USERNAME,
     EVENT_HOMEASSISTANT_STOP,
+    Platform,
 )
 from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
 from homeassistant.helpers import config_validation as cv
@@ -53,14 +54,14 @@ CAPTURE_IMAGE_SCHEMA = vol.Schema({ATTR_ENTITY_ID: cv.entity_ids})
 AUTOMATION_SCHEMA = vol.Schema({ATTR_ENTITY_ID: cv.entity_ids})
 
 PLATFORMS = [
-    "alarm_control_panel",
-    "binary_sensor",
-    "lock",
-    "switch",
-    "cover",
-    "camera",
-    "light",
-    "sensor",
+    Platform.ALARM_CONTROL_PANEL,
+    Platform.BINARY_SENSOR,
+    Platform.LOCK,
+    Platform.SWITCH,
+    Platform.COVER,
+    Platform.CAMERA,
+    Platform.LIGHT,
+    Platform.SENSOR,
 ]
 
 
diff --git a/homeassistant/components/accuweather/__init__.py b/homeassistant/components/accuweather/__init__.py
index a2b428cf597..bc8ae459fd7 100644
--- a/homeassistant/components/accuweather/__init__.py
+++ b/homeassistant/components/accuweather/__init__.py
@@ -11,7 +11,7 @@ from aiohttp.client_exceptions import ClientConnectorError
 from async_timeout import timeout
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_API_KEY
+from homeassistant.const import CONF_API_KEY, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
@@ -20,7 +20,7 @@ from .const import ATTR_FORECAST, CONF_FORECAST, DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["sensor", "weather"]
+PLATFORMS = [Platform.SENSOR, Platform.WEATHER]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/acmeda/__init__.py b/homeassistant/components/acmeda/__init__.py
index 078c499f2be..49b4d9b85e8 100644
--- a/homeassistant/components/acmeda/__init__.py
+++ b/homeassistant/components/acmeda/__init__.py
@@ -1,13 +1,14 @@
 """The Rollease Acmeda Automate integration."""
 
 from homeassistant import config_entries, core
+from homeassistant.const import Platform
 
 from .const import DOMAIN
 from .hub import PulseHub
 
 CONF_HUBS = "hubs"
 
-PLATFORMS = ["cover", "sensor"]
+PLATFORMS = [Platform.COVER, Platform.SENSOR]
 
 
 async def async_setup_entry(
diff --git a/homeassistant/components/adax/__init__.py b/homeassistant/components/adax/__init__.py
index 0a14648af26..bf339e810c6 100644
--- a/homeassistant/components/adax/__init__.py
+++ b/homeassistant/components/adax/__init__.py
@@ -2,9 +2,10 @@
 from __future__ import annotations
 
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 
-PLATFORMS = ["climate"]
+PLATFORMS = [Platform.CLIMATE]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/adguard/__init__.py b/homeassistant/components/adguard/__init__.py
index e408338cd57..9b419c444ce 100644
--- a/homeassistant/components/adguard/__init__.py
+++ b/homeassistant/components/adguard/__init__.py
@@ -16,6 +16,7 @@ from homeassistant.const import (
     CONF_URL,
     CONF_USERNAME,
     CONF_VERIFY_SSL,
+    Platform,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
@@ -46,7 +47,7 @@ SERVICE_REFRESH_SCHEMA = vol.Schema(
     {vol.Optional(CONF_FORCE, default=False): cv.boolean}
 )
 
-PLATFORMS = ["sensor", "switch"]
+PLATFORMS = [Platform.SENSOR, Platform.SWITCH]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/advantage_air/__init__.py b/homeassistant/components/advantage_air/__init__.py
index 4af0b3e5f60..21b70ab9fc6 100644
--- a/homeassistant/components/advantage_air/__init__.py
+++ b/homeassistant/components/advantage_air/__init__.py
@@ -5,14 +5,21 @@ import logging
 
 from advantage_air import ApiError, advantage_air
 
-from homeassistant.const import CONF_IP_ADDRESS, CONF_PORT
+from homeassistant.const import CONF_IP_ADDRESS, CONF_PORT, Platform
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
 from .const import ADVANTAGE_AIR_RETRY, DOMAIN
 
 ADVANTAGE_AIR_SYNC_INTERVAL = 15
-PLATFORMS = ["binary_sensor", "climate", "cover", "select", "sensor", "switch"]
+PLATFORMS = [
+    Platform.BINARY_SENSOR,
+    Platform.CLIMATE,
+    Platform.COVER,
+    Platform.SELECT,
+    Platform.SENSOR,
+    Platform.SWITCH,
+]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/aemet/const.py b/homeassistant/components/aemet/const.py
index 0074a5be6d8..40542d88506 100644
--- a/homeassistant/components/aemet/const.py
+++ b/homeassistant/components/aemet/const.py
@@ -33,11 +33,12 @@ from homeassistant.const import (
     PRESSURE_HPA,
     SPEED_KILOMETERS_PER_HOUR,
     TEMP_CELSIUS,
+    Platform,
 )
 
 ATTRIBUTION = "Powered by AEMET OpenData"
 CONF_STATION_UPDATES = "station_updates"
-PLATFORMS = ["sensor", "weather"]
+PLATFORMS = [Platform.SENSOR, Platform.WEATHER]
 DEFAULT_NAME = "AEMET"
 DOMAIN = "aemet"
 ENTRY_NAME = "name"
diff --git a/homeassistant/components/agent_dvr/__init__.py b/homeassistant/components/agent_dvr/__init__.py
index bb464d09723..373b5c2e291 100644
--- a/homeassistant/components/agent_dvr/__init__.py
+++ b/homeassistant/components/agent_dvr/__init__.py
@@ -3,6 +3,7 @@
 from agent import AgentError
 from agent.a import Agent
 
+from homeassistant.const import Platform
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import device_registry as dr
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -12,7 +13,7 @@ from .const import CONNECTION, DOMAIN as AGENT_DOMAIN, SERVER_URL
 ATTRIBUTION = "ispyconnect.com"
 DEFAULT_BRAND = "Agent DVR by ispyconnect.com"
 
-FORWARDS = ["alarm_control_panel", "camera"]
+PLATFORMS = [Platform.ALARM_CONTROL_PANEL, Platform.CAMERA]
 
 
 async def async_setup_entry(hass, config_entry):
@@ -46,14 +47,16 @@ async def async_setup_entry(hass, config_entry):
         sw_version=agent_client.version,
     )
 
-    hass.config_entries.async_setup_platforms(config_entry, FORWARDS)
+    hass.config_entries.async_setup_platforms(config_entry, PLATFORMS)
 
     return True
 
 
 async def async_unload_entry(hass, config_entry):
     """Unload a config entry."""
-    unload_ok = await hass.config_entries.async_unload_platforms(config_entry, FORWARDS)
+    unload_ok = await hass.config_entries.async_unload_platforms(
+        config_entry, PLATFORMS
+    )
 
     await hass.data[AGENT_DOMAIN][config_entry.entry_id][CONNECTION].close()
 
diff --git a/homeassistant/components/airly/__init__.py b/homeassistant/components/airly/__init__.py
index 14a58abc248..83a9a50ec7f 100644
--- a/homeassistant/components/airly/__init__.py
+++ b/homeassistant/components/airly/__init__.py
@@ -13,7 +13,7 @@ import async_timeout
 
 from homeassistant.components.air_quality import DOMAIN as AIR_QUALITY_PLATFORM
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE
+from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import entity_registry
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -33,7 +33,7 @@ from .const import (
     NO_AIRLY_SENSORS,
 )
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/airnow/__init__.py b/homeassistant/components/airnow/__init__.py
index be385d19645..9c6babe1136 100644
--- a/homeassistant/components/airnow/__init__.py
+++ b/homeassistant/components/airnow/__init__.py
@@ -8,7 +8,13 @@ from pyairnow.conv import aqi_to_concentration
 from pyairnow.errors import AirNowError
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, CONF_RADIUS
+from homeassistant.const import (
+    CONF_API_KEY,
+    CONF_LATITUDE,
+    CONF_LONGITUDE,
+    CONF_RADIUS,
+    Platform,
+)
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
@@ -33,7 +39,7 @@ from .const import (
 )
 
 _LOGGER = logging.getLogger(__name__)
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/airthings/__init__.py b/homeassistant/components/airthings/__init__.py
index 601396d36da..352c0249637 100644
--- a/homeassistant/components/airthings/__init__.py
+++ b/homeassistant/components/airthings/__init__.py
@@ -7,6 +7,7 @@ import logging
 from airthings import Airthings, AirthingsError
 
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
@@ -15,7 +16,7 @@ from .const import CONF_ID, CONF_SECRET, DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS: list[str] = ["sensor"]
+PLATFORMS: list[Platform] = [Platform.SENSOR]
 SCAN_INTERVAL = timedelta(minutes=6)
 
 
diff --git a/homeassistant/components/airtouch4/__init__.py b/homeassistant/components/airtouch4/__init__.py
index 0ec63161ea3..7b0673ecfe4 100644
--- a/homeassistant/components/airtouch4/__init__.py
+++ b/homeassistant/components/airtouch4/__init__.py
@@ -6,7 +6,7 @@ from airtouch4pyapi.airtouch import AirTouchStatus
 
 from homeassistant.components.climate import SCAN_INTERVAL
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST
+from homeassistant.const import CONF_HOST, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
@@ -15,7 +15,7 @@ from .const import DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["climate"]
+PLATFORMS = [Platform.CLIMATE]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/airvisual/__init__.py b/homeassistant/components/airvisual/__init__.py
index 15e5407138b..876cb270e99 100644
--- a/homeassistant/components/airvisual/__init__.py
+++ b/homeassistant/components/airvisual/__init__.py
@@ -23,6 +23,7 @@ from homeassistant.const import (
     CONF_PASSWORD,
     CONF_SHOW_ON_MAP,
     CONF_STATE,
+    Platform,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryAuthFailed
@@ -51,7 +52,7 @@ from .const import (
     LOGGER,
 )
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 DEFAULT_ATTRIBUTION = "Data provided by AirVisual"
 DEFAULT_NODE_PRO_UPDATE_INTERVAL = timedelta(minutes=1)
diff --git a/homeassistant/components/alarmdecoder/__init__.py b/homeassistant/components/alarmdecoder/__init__.py
index 69870450869..fd0b76a5c8a 100644
--- a/homeassistant/components/alarmdecoder/__init__.py
+++ b/homeassistant/components/alarmdecoder/__init__.py
@@ -12,6 +12,7 @@ from homeassistant.const import (
     CONF_PORT,
     CONF_PROTOCOL,
     EVENT_HOMEASSISTANT_STOP,
+    Platform,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.util import dt as dt_util
@@ -35,7 +36,11 @@ from .const import (
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["alarm_control_panel", "sensor", "binary_sensor"]
+PLATFORMS = [
+    Platform.ALARM_CONTROL_PANEL,
+    Platform.SENSOR,
+    Platform.BINARY_SENSOR,
+]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/ambee/__init__.py b/homeassistant/components/ambee/__init__.py
index 362dc26d851..4481afb09ca 100644
--- a/homeassistant/components/ambee/__init__.py
+++ b/homeassistant/components/ambee/__init__.py
@@ -3,16 +3,15 @@ from __future__ import annotations
 
 from ambee import AirQuality, Ambee, AmbeeAuthenticationError, Pollen
 
-from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE
+from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
 
 from .const import DOMAIN, LOGGER, SCAN_INTERVAL, SERVICE_AIR_QUALITY, SERVICE_POLLEN
 
-PLATFORMS = (SENSOR_DOMAIN,)
+PLATFORMS = [Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/amberelectric/const.py b/homeassistant/components/amberelectric/const.py
index fe2e5f9bb88..f3cda887150 100644
--- a/homeassistant/components/amberelectric/const.py
+++ b/homeassistant/components/amberelectric/const.py
@@ -1,6 +1,8 @@
 """Amber Electric Constants."""
 import logging
 
+from homeassistant.const import Platform
+
 DOMAIN = "amberelectric"
 CONF_API_TOKEN = "api_token"
 CONF_SITE_NAME = "site_name"
@@ -10,4 +12,4 @@ CONF_SITE_NMI = "site_nmi"
 ATTRIBUTION = "Data provided by Amber Electric"
 
 LOGGER = logging.getLogger(__package__)
-PLATFORMS = ["sensor", "binary_sensor"]
+PLATFORMS = [Platform.SENSOR, Platform.BINARY_SENSOR]
diff --git a/homeassistant/components/ambient_station/__init__.py b/homeassistant/components/ambient_station/__init__.py
index 385722bf597..6406b5a10df 100644
--- a/homeassistant/components/ambient_station/__init__.py
+++ b/homeassistant/components/ambient_station/__init__.py
@@ -13,6 +13,7 @@ from homeassistant.const import (
     ATTR_NAME,
     CONF_API_KEY,
     EVENT_HOMEASSISTANT_STOP,
+    Platform,
 )
 from homeassistant.core import Event, HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryNotReady
@@ -34,7 +35,7 @@ from .const import (
     TYPE_SOLARRADIATION_LX,
 )
 
-PLATFORMS = ["binary_sensor", "sensor"]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.SENSOR]
 
 DATA_CONFIG = "config"
 
diff --git a/homeassistant/components/arcam_fmj/__init__.py b/homeassistant/components/arcam_fmj/__init__.py
index 8784e0f13ae..125dd7af6ae 100644
--- a/homeassistant/components/arcam_fmj/__init__.py
+++ b/homeassistant/components/arcam_fmj/__init__.py
@@ -8,7 +8,7 @@ from arcam.fmj.client import Client
 import async_timeout
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_PORT, EVENT_HOMEASSISTANT_STOP
+from homeassistant.const import CONF_HOST, CONF_PORT, EVENT_HOMEASSISTANT_STOP, Platform
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.typing import ConfigType
@@ -27,7 +27,7 @@ _LOGGER = logging.getLogger(__name__)
 
 CONFIG_SCHEMA = cv.deprecated(DOMAIN)
 
-PLATFORMS = ["media_player"]
+PLATFORMS = [Platform.MEDIA_PLAYER]
 
 
 async def _await_cancel(task):
diff --git a/homeassistant/components/asuswrt/__init__.py b/homeassistant/components/asuswrt/__init__.py
index 534ce6bd7df..fb6c547cc6b 100644
--- a/homeassistant/components/asuswrt/__init__.py
+++ b/homeassistant/components/asuswrt/__init__.py
@@ -12,6 +12,7 @@ from homeassistant.const import (
     CONF_SENSORS,
     CONF_USERNAME,
     EVENT_HOMEASSISTANT_STOP,
+    Platform,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_validation as cv
@@ -33,7 +34,7 @@ from .const import (
 )
 from .router import AsusWrtRouter
 
-PLATFORMS = ["device_tracker", "sensor"]
+PLATFORMS = [Platform.DEVICE_TRACKER, Platform.SENSOR]
 
 CONF_PUB_KEY = "pub_key"
 SECRET_GROUP = "Password or SSH Key"
diff --git a/homeassistant/components/atag/__init__.py b/homeassistant/components/atag/__init__.py
index 920b910269d..82340032a1a 100644
--- a/homeassistant/components/atag/__init__.py
+++ b/homeassistant/components/atag/__init__.py
@@ -5,10 +5,8 @@ import logging
 import async_timeout
 from pyatag import AtagException, AtagOne
 
-from homeassistant.components.climate import DOMAIN as CLIMATE
-from homeassistant.components.sensor import DOMAIN as SENSOR
-from homeassistant.components.water_heater import DOMAIN as WATER_HEATER
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.entity import DeviceInfo
@@ -21,7 +19,7 @@ from homeassistant.helpers.update_coordinator import (
 _LOGGER = logging.getLogger(__name__)
 
 DOMAIN = "atag"
-PLATFORMS = [CLIMATE, WATER_HEATER, SENSOR]
+PLATFORMS = [Platform.CLIMATE, Platform.WATER_HEATER, Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/atag/climate.py b/homeassistant/components/atag/climate.py
index 1a5e2a597cf..d58d475d506 100644
--- a/homeassistant/components/atag/climate.py
+++ b/homeassistant/components/atag/climate.py
@@ -12,9 +12,9 @@ from homeassistant.components.climate.const import (
     SUPPORT_PRESET_MODE,
     SUPPORT_TARGET_TEMPERATURE,
 )
-from homeassistant.const import ATTR_TEMPERATURE
+from homeassistant.const import ATTR_TEMPERATURE, Platform
 
-from . import CLIMATE, DOMAIN, AtagEntity
+from . import DOMAIN, AtagEntity
 
 PRESET_MAP = {
     "Manual": "manual",
@@ -31,7 +31,7 @@ HVAC_MODES = [HVAC_MODE_AUTO, HVAC_MODE_HEAT]
 async def async_setup_entry(hass, entry, async_add_entities):
     """Load a config entry."""
     coordinator = hass.data[DOMAIN][entry.entry_id]
-    async_add_entities([AtagThermostat(coordinator, CLIMATE)])
+    async_add_entities([AtagThermostat(coordinator, Platform.CLIMATE)])
 
 
 class AtagThermostat(AtagEntity, ClimateEntity):
diff --git a/homeassistant/components/atag/water_heater.py b/homeassistant/components/atag/water_heater.py
index 5fce2abf63e..b45e877a310 100644
--- a/homeassistant/components/atag/water_heater.py
+++ b/homeassistant/components/atag/water_heater.py
@@ -5,9 +5,9 @@ from homeassistant.components.water_heater import (
     STATE_PERFORMANCE,
     WaterHeaterEntity,
 )
-from homeassistant.const import STATE_OFF, TEMP_CELSIUS
+from homeassistant.const import STATE_OFF, TEMP_CELSIUS, Platform
 
-from . import DOMAIN, WATER_HEATER, AtagEntity
+from . import DOMAIN, AtagEntity
 
 SUPPORT_FLAGS_HEATER = 0
 OPERATION_LIST = [STATE_OFF, STATE_ECO, STATE_PERFORMANCE]
@@ -16,7 +16,7 @@ OPERATION_LIST = [STATE_OFF, STATE_ECO, STATE_PERFORMANCE]
 async def async_setup_entry(hass, config_entry, async_add_entities):
     """Initialize DHW device from config entry."""
     coordinator = hass.data[DOMAIN][config_entry.entry_id]
-    async_add_entities([AtagWaterHeater(coordinator, WATER_HEATER)])
+    async_add_entities([AtagWaterHeater(coordinator, Platform.WATER_HEATER)])
 
 
 class AtagWaterHeater(AtagEntity, WaterHeaterEntity):
diff --git a/homeassistant/components/august/const.py b/homeassistant/components/august/const.py
index 57e0d5a7fb7..dfe9cc0f700 100644
--- a/homeassistant/components/august/const.py
+++ b/homeassistant/components/august/const.py
@@ -2,6 +2,8 @@
 
 from datetime import timedelta
 
+from homeassistant.const import Platform
+
 DEFAULT_TIMEOUT = 10
 
 CONF_ACCESS_TOKEN_CACHE_FILE = "access_token_cache_file"
@@ -43,4 +45,9 @@ ACTIVITY_UPDATE_INTERVAL = timedelta(seconds=10)
 
 LOGIN_METHODS = ["phone", "email"]
 
-PLATFORMS = ["camera", "binary_sensor", "lock", "sensor"]
+PLATFORMS = [
+    Platform.CAMERA,
+    Platform.BINARY_SENSOR,
+    Platform.LOCK,
+    Platform.SENSOR,
+]
diff --git a/homeassistant/components/aurora/__init__.py b/homeassistant/components/aurora/__init__.py
index a88378edaa9..a029f2cf61b 100644
--- a/homeassistant/components/aurora/__init__.py
+++ b/homeassistant/components/aurora/__init__.py
@@ -7,7 +7,7 @@ from aiohttp import ClientError
 from auroranoaa import AuroraForecast
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_LATITUDE, CONF_LONGITUDE, CONF_NAME
+from homeassistant.const import CONF_LATITUDE, CONF_LONGITUDE, CONF_NAME, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import aiohttp_client
 from homeassistant.helpers.device_registry import DeviceEntryType
@@ -30,7 +30,7 @@ from .const import (
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["binary_sensor", "sensor"]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/aurora_abb_powerone/__init__.py b/homeassistant/components/aurora_abb_powerone/__init__.py
index 21724acaff6..08103193e7b 100644
--- a/homeassistant/components/aurora_abb_powerone/__init__.py
+++ b/homeassistant/components/aurora_abb_powerone/__init__.py
@@ -13,14 +13,14 @@ import logging
 from aurorapy.client import AuroraError, AuroraSerialClient
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_ADDRESS, CONF_PORT
+from homeassistant.const import CONF_ADDRESS, CONF_PORT, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 
 from .config_flow import validate_and_connect
 from .const import ATTR_SERIAL_NUMBER, DOMAIN
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/awair/__init__.py b/homeassistant/components/awair/__init__.py
index d78931e5d2f..2cfaa88022d 100644
--- a/homeassistant/components/awair/__init__.py
+++ b/homeassistant/components/awair/__init__.py
@@ -8,14 +8,14 @@ from async_timeout import timeout
 from python_awair import Awair
 from python_awair.exceptions import AuthError
 
-from homeassistant.const import CONF_ACCESS_TOKEN
+from homeassistant.const import CONF_ACCESS_TOKEN, Platform
 from homeassistant.exceptions import ConfigEntryAuthFailed
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
 from .const import API_TIMEOUT, DOMAIN, LOGGER, UPDATE_INTERVAL, AwairResult
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 
 async def async_setup_entry(hass, config_entry) -> bool:
diff --git a/homeassistant/components/azure_devops/__init__.py b/homeassistant/components/azure_devops/__init__.py
index d3599aa3021..213dc19ff9e 100644
--- a/homeassistant/components/azure_devops/__init__.py
+++ b/homeassistant/components/azure_devops/__init__.py
@@ -12,6 +12,7 @@ from aioazuredevops.core import DevOpsProject
 import aiohttp
 
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed
 from homeassistant.helpers.device_registry import DeviceEntryType
@@ -26,7 +27,7 @@ from .const import CONF_ORG, CONF_PAT, CONF_PROJECT, DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 BUILDS_QUERY: Final = "?queryOrder=queueTimeDescending&maxBuildsPerDefinition=1"
 
diff --git a/homeassistant/components/balboa/const.py b/homeassistant/components/balboa/const.py
index 59ca0041bf6..f5b28804952 100644
--- a/homeassistant/components/balboa/const.py
+++ b/homeassistant/components/balboa/const.py
@@ -11,6 +11,7 @@ from homeassistant.components.climate.const import (
     HVAC_MODE_OFF,
 )
 from homeassistant.components.fan import SPEED_HIGH, SPEED_LOW, SPEED_OFF
+from homeassistant.const import Platform
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -21,7 +22,7 @@ CLIMATE_SUPPORTED_MODES = [HVAC_MODE_AUTO, HVAC_MODE_HEAT, HVAC_MODE_OFF]
 CONF_SYNC_TIME = "sync_time"
 DEFAULT_SYNC_TIME = False
 FAN_SUPPORTED_SPEEDS = [SPEED_OFF, SPEED_LOW, SPEED_HIGH]
-PLATFORMS = ["binary_sensor", "climate"]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.CLIMATE]
 
 AUX = "Aux"
 CIRC_PUMP = "Circ Pump"
diff --git a/homeassistant/components/blebox/__init__.py b/homeassistant/components/blebox/__init__.py
index 681fff4a9bc..b6a0045940d 100644
--- a/homeassistant/components/blebox/__init__.py
+++ b/homeassistant/components/blebox/__init__.py
@@ -6,7 +6,7 @@ from blebox_uniapi.products import Products
 from blebox_uniapi.session import ApiHost
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_PORT
+from homeassistant.const import CONF_HOST, CONF_PORT, Platform
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -16,7 +16,14 @@ from .const import DEFAULT_SETUP_TIMEOUT, DOMAIN, PRODUCT
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["cover", "sensor", "switch", "air_quality", "light", "climate"]
+PLATFORMS = [
+    Platform.COVER,
+    Platform.SENSOR,
+    Platform.SWITCH,
+    Platform.AIR_QUALITY,
+    Platform.LIGHT,
+    Platform.CLIMATE,
+]
 
 PARALLEL_UPDATES = 0
 
diff --git a/homeassistant/components/blink/const.py b/homeassistant/components/blink/const.py
index c93adbec46b..8986782031f 100644
--- a/homeassistant/components/blink/const.py
+++ b/homeassistant/components/blink/const.py
@@ -1,4 +1,6 @@
 """Constants for Blink."""
+from homeassistant.const import Platform
+
 DOMAIN = "blink"
 DEVICE_ID = "Home Assistant"
 
@@ -23,4 +25,9 @@ SERVICE_TRIGGER = "trigger_camera"
 SERVICE_SAVE_VIDEO = "save_video"
 SERVICE_SEND_PIN = "send_pin"
 
-PLATFORMS = ("alarm_control_panel", "binary_sensor", "camera", "sensor")
+PLATFORMS = [
+    Platform.ALARM_CONTROL_PANEL,
+    Platform.BINARY_SENSOR,
+    Platform.CAMERA,
+    Platform.SENSOR,
+]
diff --git a/homeassistant/components/bmw_connected_drive/__init__.py b/homeassistant/components/bmw_connected_drive/__init__.py
index 78a41ec8548..a520214ca6a 100644
--- a/homeassistant/components/bmw_connected_drive/__init__.py
+++ b/homeassistant/components/bmw_connected_drive/__init__.py
@@ -18,6 +18,7 @@ from homeassistant.const import (
     CONF_PASSWORD,
     CONF_REGION,
     CONF_USERNAME,
+    Platform,
 )
 from homeassistant.core import HomeAssistant, ServiceCall, callback
 from homeassistant.exceptions import ConfigEntryNotReady
@@ -67,7 +68,13 @@ DEFAULT_OPTIONS = {
     CONF_USE_LOCATION: False,
 }
 
-PLATFORMS = ["binary_sensor", "device_tracker", "lock", "notify", "sensor"]
+PLATFORMS = [
+    Platform.BINARY_SENSOR,
+    Platform.DEVICE_TRACKER,
+    Platform.LOCK,
+    Platform.NOTIFY,
+    Platform.SENSOR,
+]
 UPDATE_INTERVAL = 5  # in minutes
 
 SERVICE_UPDATE_STATE = "update_state"
@@ -150,7 +157,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     await _async_update_all()
 
     hass.config_entries.async_setup_platforms(
-        entry, [platform for platform in PLATFORMS if platform != NOTIFY_DOMAIN]
+        entry, [platform for platform in PLATFORMS if platform != Platform.NOTIFY]
     )
 
     # set up notify platform, no entry support for notify platform yet,
@@ -171,7 +178,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload a config entry."""
     unload_ok = await hass.config_entries.async_unload_platforms(
-        entry, [platform for platform in PLATFORMS if platform != NOTIFY_DOMAIN]
+        entry, [platform for platform in PLATFORMS if platform != Platform.NOTIFY]
     )
 
     # Only remove services if it is the last account and not read only
diff --git a/homeassistant/components/bond/__init__.py b/homeassistant/components/bond/__init__.py
index 501ddfb6888..95fa740f24c 100644
--- a/homeassistant/components/bond/__init__.py
+++ b/homeassistant/components/bond/__init__.py
@@ -8,7 +8,12 @@ from aiohttp import ClientError, ClientResponseError, ClientTimeout
 from bond_api import Bond, BPUPSubscriptions, start_bpup
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_ACCESS_TOKEN, CONF_HOST, EVENT_HOMEASSISTANT_STOP
+from homeassistant.const import (
+    CONF_ACCESS_TOKEN,
+    CONF_HOST,
+    EVENT_HOMEASSISTANT_STOP,
+    Platform,
+)
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import device_registry as dr
@@ -18,7 +23,12 @@ from homeassistant.helpers.entity import SLOW_UPDATE_WARNING
 from .const import BPUP_SUBS, BRIDGE_MAKE, DOMAIN, HUB
 from .utils import BondHub
 
-PLATFORMS = ["cover", "fan", "light", "switch"]
+PLATFORMS = [
+    Platform.COVER,
+    Platform.FAN,
+    Platform.LIGHT,
+    Platform.SWITCH,
+]
 _API_TIMEOUT = SLOW_UPDATE_WARNING - 1
 
 _LOGGER = logging.getLogger(__name__)
diff --git a/homeassistant/components/bosch_shc/__init__.py b/homeassistant/components/bosch_shc/__init__.py
index 2909350fc1c..afcf2571c31 100644
--- a/homeassistant/components/bosch_shc/__init__.py
+++ b/homeassistant/components/bosch_shc/__init__.py
@@ -6,7 +6,7 @@ from boschshcpy.exceptions import SHCAuthenticationError, SHCConnectionError
 
 from homeassistant.components.zeroconf import async_get_instance
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, EVENT_HOMEASSISTANT_STOP
+from homeassistant.const import CONF_HOST, EVENT_HOMEASSISTANT_STOP, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
 from homeassistant.helpers import device_registry as dr
@@ -19,7 +19,7 @@ from .const import (
     DOMAIN,
 )
 
-PLATFORMS = ["binary_sensor", "cover", "sensor"]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.COVER, Platform.SENSOR]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/braviatv/__init__.py b/homeassistant/components/braviatv/__init__.py
index 744c856a143..38dbc4f0ebc 100644
--- a/homeassistant/components/braviatv/__init__.py
+++ b/homeassistant/components/braviatv/__init__.py
@@ -10,10 +10,8 @@ from typing import Final
 from bravia_tv import BraviaRC
 from bravia_tv.braviarc import NoIPControl
 
-from homeassistant.components.media_player import DOMAIN as MEDIA_PLAYER_DOMAIN
-from homeassistant.components.remote import DOMAIN as REMOTE_DOMAIN
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_MAC, CONF_PIN
+from homeassistant.const import CONF_HOST, CONF_MAC, CONF_PIN, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.debounce import Debouncer
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
@@ -22,7 +20,7 @@ from .const import CLIENTID_PREFIX, CONF_IGNORED_SOURCES, DOMAIN, NICKNAME
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS: Final[list[str]] = [MEDIA_PLAYER_DOMAIN, REMOTE_DOMAIN]
+PLATFORMS: Final[list[Platform]] = [Platform.MEDIA_PLAYER, Platform.REMOTE]
 SCAN_INTERVAL: Final = timedelta(seconds=10)
 
 
diff --git a/homeassistant/components/broadlink/const.py b/homeassistant/components/broadlink/const.py
index 174c7edde3a..3f7744ecbb4 100644
--- a/homeassistant/components/broadlink/const.py
+++ b/homeassistant/components/broadlink/const.py
@@ -1,14 +1,11 @@
 """Constants."""
-from homeassistant.components.light import DOMAIN as LIGHT_DOMAIN
-from homeassistant.components.remote import DOMAIN as REMOTE_DOMAIN
-from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
-from homeassistant.components.switch import DOMAIN as SWITCH_DOMAIN
+from homeassistant.const import Platform
 
 DOMAIN = "broadlink"
 
 DOMAINS_AND_TYPES = {
-    REMOTE_DOMAIN: {"RM4MINI", "RM4PRO", "RMMINI", "RMMINIB", "RMPRO"},
-    SENSOR_DOMAIN: {
+    Platform.REMOTE: {"RM4MINI", "RM4PRO", "RMMINI", "RMMINIB", "RMPRO"},
+    Platform.SENSOR: {
         "A1",
         "RM4MINI",
         "RM4PRO",
@@ -18,7 +15,7 @@ DOMAINS_AND_TYPES = {
         "SP4",
         "SP4B",
     },
-    SWITCH_DOMAIN: {
+    Platform.SWITCH: {
         "BG1",
         "MP1",
         "RM4MINI",
@@ -34,7 +31,7 @@ DOMAINS_AND_TYPES = {
         "SP4",
         "SP4B",
     },
-    LIGHT_DOMAIN: {"LB1"},
+    Platform.LIGHT: {"LB1"},
 }
 DEVICE_TYPES = set.union(*DOMAINS_AND_TYPES.values())
 
diff --git a/homeassistant/components/broadlink/switch.py b/homeassistant/components/broadlink/switch.py
index 0649b526537..d8fc9632321 100644
--- a/homeassistant/components/broadlink/switch.py
+++ b/homeassistant/components/broadlink/switch.py
@@ -22,11 +22,12 @@ from homeassistant.const import (
     CONF_TIMEOUT,
     CONF_TYPE,
     STATE_ON,
+    Platform,
 )
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.restore_state import RestoreEntity
 
-from .const import DOMAIN, SWITCH_DOMAIN
+from .const import DOMAIN
 from .entity import BroadlinkEntity
 from .helpers import data_packet, import_device, mac_address
 
@@ -90,7 +91,7 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
         )
 
     if switches:
-        platform_data = hass.data[DOMAIN].platforms.setdefault(SWITCH_DOMAIN, {})
+        platform_data = hass.data[DOMAIN].platforms.setdefault(Platform.SWITCH, {})
         platform_data.setdefault(mac_addr, []).extend(switches)
 
     else:
@@ -110,7 +111,7 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
     switches = []
 
     if device.api.type in {"RM4MINI", "RM4PRO", "RMMINI", "RMMINIB", "RMPRO"}:
-        platform_data = hass.data[DOMAIN].platforms.get(SWITCH_DOMAIN, {})
+        platform_data = hass.data[DOMAIN].platforms.get(Platform.SWITCH, {})
         user_defined_switches = platform_data.get(device.api.mac, {})
         switches.extend(
             BroadlinkRMSwitch(device, config) for config in user_defined_switches
diff --git a/homeassistant/components/brother/__init__.py b/homeassistant/components/brother/__init__.py
index 45053c74f03..ce715e991b0 100644
--- a/homeassistant/components/brother/__init__.py
+++ b/homeassistant/components/brother/__init__.py
@@ -8,14 +8,14 @@ from brother import Brother, DictToObj, SnmpError, UnsupportedModel
 import pysnmp.hlapi.asyncio as SnmpEngine
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_TYPE
+from homeassistant.const import CONF_HOST, CONF_TYPE, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
 from .const import DATA_CONFIG_ENTRY, DOMAIN, SNMP
 from .utils import get_snmp_engine
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 SCAN_INTERVAL = timedelta(seconds=30)
 
diff --git a/homeassistant/components/brunt/const.py b/homeassistant/components/brunt/const.py
index 4ffaf2875c9..cc85ac9a415 100644
--- a/homeassistant/components/brunt/const.py
+++ b/homeassistant/components/brunt/const.py
@@ -1,12 +1,14 @@
 """Constants for Brunt."""
 from datetime import timedelta
 
+from homeassistant.const import Platform
+
 DOMAIN = "brunt"
 ATTR_REQUEST_POSITION = "request_position"
 NOTIFICATION_ID = "brunt_notification"
 NOTIFICATION_TITLE = "Brunt Cover Setup"
 ATTRIBUTION = "Based on an unofficial Brunt SDK."
-PLATFORMS = ["cover"]
+PLATFORMS = [Platform.COVER]
 DATA_BAPI = "bapi"
 DATA_COOR = "coordinator"
 
diff --git a/homeassistant/components/bsblan/__init__.py b/homeassistant/components/bsblan/__init__.py
index 6c6c8a18336..7ada5b01e46 100644
--- a/homeassistant/components/bsblan/__init__.py
+++ b/homeassistant/components/bsblan/__init__.py
@@ -3,9 +3,14 @@ from datetime import timedelta
 
 from bsblan import BSBLan, BSBLanConnectionError
 
-from homeassistant.components.climate import DOMAIN as CLIMATE_DOMAIN
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_PORT, CONF_USERNAME
+from homeassistant.const import (
+    CONF_HOST,
+    CONF_PASSWORD,
+    CONF_PORT,
+    CONF_USERNAME,
+    Platform,
+)
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -14,7 +19,7 @@ from .const import CONF_PASSKEY, DATA_BSBLAN_CLIENT, DOMAIN
 
 SCAN_INTERVAL = timedelta(seconds=30)
 
-PLATFORMS = [CLIMATE_DOMAIN]
+PLATFORMS = [Platform.CLIMATE]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/buienradar/__init__.py b/homeassistant/components/buienradar/__init__.py
index d7ec47d2bf8..64b94cfbaa8 100644
--- a/homeassistant/components/buienradar/__init__.py
+++ b/homeassistant/components/buienradar/__init__.py
@@ -2,11 +2,12 @@
 from __future__ import annotations
 
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 
 from .const import DOMAIN
 
-PLATFORMS = ["camera", "sensor", "weather"]
+PLATFORMS = [Platform.CAMERA, Platform.SENSOR, Platform.WEATHER]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/canary/__init__.py b/homeassistant/components/canary/__init__.py
index b276fc4ed34..9b020a2f09d 100644
--- a/homeassistant/components/canary/__init__.py
+++ b/homeassistant/components/canary/__init__.py
@@ -11,7 +11,7 @@ import voluptuous as vol
 
 from homeassistant.components.camera.const import DOMAIN as CAMERA_DOMAIN
 from homeassistant.config_entries import SOURCE_IMPORT, ConfigEntry
-from homeassistant.const import CONF_PASSWORD, CONF_TIMEOUT, CONF_USERNAME
+from homeassistant.const import CONF_PASSWORD, CONF_TIMEOUT, CONF_USERNAME, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 import homeassistant.helpers.config_validation as cv
@@ -49,7 +49,11 @@ CONFIG_SCHEMA: Final = vol.Schema(
     extra=vol.ALLOW_EXTRA,
 )
 
-PLATFORMS: Final[list[str]] = ["alarm_control_panel", "camera", "sensor"]
+PLATFORMS: Final[list[Platform]] = [
+    Platform.ALARM_CONTROL_PANEL,
+    Platform.CAMERA,
+    Platform.SENSOR,
+]
 
 
 async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
diff --git a/homeassistant/components/cert_expiry/__init__.py b/homeassistant/components/cert_expiry/__init__.py
index 61c7a0758c7..2980d4ca5d4 100644
--- a/homeassistant/components/cert_expiry/__init__.py
+++ b/homeassistant/components/cert_expiry/__init__.py
@@ -6,7 +6,12 @@ import logging
 from typing import Optional
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_PORT, EVENT_HOMEASSISTANT_STARTED
+from homeassistant.const import (
+    CONF_HOST,
+    CONF_PORT,
+    EVENT_HOMEASSISTANT_STARTED,
+    Platform,
+)
 from homeassistant.core import CoreState, HomeAssistant
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
@@ -18,7 +23,7 @@ _LOGGER = logging.getLogger(__name__)
 
 SCAN_INTERVAL = timedelta(hours=12)
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/climacell/__init__.py b/homeassistant/components/climacell/__init__.py
index bd22e8f92aa..aceb24b695f 100644
--- a/homeassistant/components/climacell/__init__.py
+++ b/homeassistant/components/climacell/__init__.py
@@ -15,8 +15,6 @@ from pyclimacell.exceptions import (
     UnknownException,
 )
 
-from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
-from homeassistant.components.weather import DOMAIN as WEATHER_DOMAIN
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     CONF_API_KEY,
@@ -24,6 +22,7 @@ from homeassistant.const import (
     CONF_LATITUDE,
     CONF_LONGITUDE,
     CONF_NAME,
+    Platform,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -76,7 +75,7 @@ from .const import (
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = [SENSOR_DOMAIN, WEATHER_DOMAIN]
+PLATFORMS = [Platform.SENSOR, Platform.WEATHER]
 
 
 def _set_update_interval(hass: HomeAssistant, current_entry: ConfigEntry) -> timedelta:
diff --git a/homeassistant/components/co2signal/__init__.py b/homeassistant/components/co2signal/__init__.py
index 26f41ac2e67..a87aed64564 100644
--- a/homeassistant/components/co2signal/__init__.py
+++ b/homeassistant/components/co2signal/__init__.py
@@ -8,7 +8,7 @@ from typing import TypedDict, cast
 import CO2Signal
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE
+from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed, HomeAssistantError
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
@@ -16,7 +16,7 @@ from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, Upda
 from .const import CONF_COUNTRY_CODE, DOMAIN
 from .util import get_extra_name
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 _LOGGER = logging.getLogger(__name__)
 
 
diff --git a/homeassistant/components/coinbase/__init__.py b/homeassistant/components/coinbase/__init__.py
index 111064924af..238ff1db87d 100644
--- a/homeassistant/components/coinbase/__init__.py
+++ b/homeassistant/components/coinbase/__init__.py
@@ -9,7 +9,7 @@ from coinbase.wallet.error import AuthenticationError
 import voluptuous as vol
 
 from homeassistant.config_entries import SOURCE_IMPORT, ConfigEntry
-from homeassistant.const import CONF_API_KEY, CONF_API_TOKEN
+from homeassistant.const import CONF_API_KEY, CONF_API_TOKEN, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import entity_registry
 import homeassistant.helpers.config_validation as cv
@@ -28,7 +28,7 @@ from .const import (
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 MIN_TIME_BETWEEN_UPDATES = timedelta(minutes=1)
 
 
diff --git a/homeassistant/components/control4/__init__.py b/homeassistant/components/control4/__init__.py
index d593f759eb3..ee2f51303f2 100644
--- a/homeassistant/components/control4/__init__.py
+++ b/homeassistant/components/control4/__init__.py
@@ -16,6 +16,7 @@ from homeassistant.const import (
     CONF_SCAN_INTERVAL,
     CONF_TOKEN,
     CONF_USERNAME,
+    Platform,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
@@ -41,7 +42,7 @@ from .const import (
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["light"]
+PLATFORMS = [Platform.LIGHT]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/coolmaster/__init__.py b/homeassistant/components/coolmaster/__init__.py
index 1bcf20f4d5e..fc0040bf245 100644
--- a/homeassistant/components/coolmaster/__init__.py
+++ b/homeassistant/components/coolmaster/__init__.py
@@ -4,7 +4,7 @@ import logging
 from pycoolmasternet_async import CoolMasterNet
 
 from homeassistant.components.climate import SCAN_INTERVAL
-from homeassistant.const import CONF_HOST, CONF_PORT
+from homeassistant.const import CONF_HOST, CONF_PORT, Platform
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
@@ -12,7 +12,7 @@ from .const import DATA_COORDINATOR, DATA_INFO, DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["climate"]
+PLATFORMS = [Platform.CLIMATE]
 
 
 async def async_setup_entry(hass, entry):
diff --git a/homeassistant/components/coronavirus/__init__.py b/homeassistant/components/coronavirus/__init__.py
index 5deceb5cddc..27085c88ef2 100644
--- a/homeassistant/components/coronavirus/__init__.py
+++ b/homeassistant/components/coronavirus/__init__.py
@@ -6,13 +6,14 @@ import async_timeout
 import coronavirus
 
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import aiohttp_client, entity_registry, update_coordinator
 from homeassistant.helpers.typing import ConfigType
 
 from .const import DOMAIN
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 
 async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
diff --git a/homeassistant/components/crownstone/const.py b/homeassistant/components/crownstone/const.py
index 21a14b99e86..a362435b9ce 100644
--- a/homeassistant/components/crownstone/const.py
+++ b/homeassistant/components/crownstone/const.py
@@ -3,9 +3,11 @@ from __future__ import annotations
 
 from typing import Final
 
+from homeassistant.const import Platform
+
 # Platforms
 DOMAIN: Final = "crownstone"
-PLATFORMS: Final[list[str]] = ["light"]
+PLATFORMS: Final[list[Platform]] = [Platform.LIGHT]
 
 # Listeners
 SSE_LISTENERS: Final = "sse_listeners"
diff --git a/homeassistant/components/daikin/__init__.py b/homeassistant/components/daikin/__init__.py
index 507ec2f5d79..f588f66761c 100644
--- a/homeassistant/components/daikin/__init__.py
+++ b/homeassistant/components/daikin/__init__.py
@@ -8,7 +8,7 @@ from async_timeout import timeout
 from pydaikin.daikin_base import Appliance
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_API_KEY, CONF_HOST, CONF_PASSWORD
+from homeassistant.const import CONF_API_KEY, CONF_HOST, CONF_PASSWORD, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 import homeassistant.helpers.config_validation as cv
@@ -23,7 +23,7 @@ _LOGGER = logging.getLogger(__name__)
 PARALLEL_UPDATES = 0
 MIN_TIME_BETWEEN_UPDATES = timedelta(seconds=60)
 
-PLATFORMS = ["climate", "sensor", "switch"]
+PLATFORMS = [Platform.CLIMATE, Platform.SENSOR, Platform.SWITCH]
 
 CONFIG_SCHEMA = cv.deprecated(DOMAIN)
 
diff --git a/homeassistant/components/deconz/const.py b/homeassistant/components/deconz/const.py
index 09f0cd15141..ad668934acf 100644
--- a/homeassistant/components/deconz/const.py
+++ b/homeassistant/components/deconz/const.py
@@ -1,20 +1,7 @@
 """Constants for the deCONZ component."""
 import logging
 
-from homeassistant.components.alarm_control_panel import (
-    DOMAIN as ALARM_CONTROL_PANEL_DOMAIN,
-)
-from homeassistant.components.binary_sensor import DOMAIN as BINARY_SENSOR_DOMAIN
-from homeassistant.components.climate import DOMAIN as CLIMATE_DOMAIN
-from homeassistant.components.cover import DOMAIN as COVER_DOMAIN
-from homeassistant.components.fan import DOMAIN as FAN_DOMAIN
-from homeassistant.components.light import DOMAIN as LIGHT_DOMAIN
-from homeassistant.components.lock import DOMAIN as LOCK_DOMAIN
-from homeassistant.components.number import DOMAIN as NUMBER_DOMAIN
-from homeassistant.components.scene import DOMAIN as SCENE_DOMAIN
-from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
-from homeassistant.components.siren import DOMAIN as SIREN_DOMAIN
-from homeassistant.components.switch import DOMAIN as SWITCH_DOMAIN
+from homeassistant.const import Platform
 
 LOGGER = logging.getLogger(__package__)
 
@@ -34,18 +21,18 @@ CONF_ALLOW_NEW_DEVICES = "allow_new_devices"
 CONF_MASTER_GATEWAY = "master"
 
 PLATFORMS = [
-    ALARM_CONTROL_PANEL_DOMAIN,
-    BINARY_SENSOR_DOMAIN,
-    CLIMATE_DOMAIN,
-    COVER_DOMAIN,
-    FAN_DOMAIN,
-    LIGHT_DOMAIN,
-    LOCK_DOMAIN,
-    NUMBER_DOMAIN,
-    SCENE_DOMAIN,
-    SENSOR_DOMAIN,
-    SIREN_DOMAIN,
-    SWITCH_DOMAIN,
+    Platform.ALARM_CONTROL_PANEL,
+    Platform.BINARY_SENSOR,
+    Platform.CLIMATE,
+    Platform.COVER,
+    Platform.FAN,
+    Platform.LIGHT,
+    Platform.LOCK,
+    Platform.NUMBER,
+    Platform.SCENE,
+    Platform.SENSOR,
+    Platform.SIREN,
+    Platform.SWITCH,
 ]
 
 ATTR_DARK = "dark"
diff --git a/homeassistant/components/denonavr/__init__.py b/homeassistant/components/denonavr/__init__.py
index 75bd69cf2e3..d58bbe963d7 100644
--- a/homeassistant/components/denonavr/__init__.py
+++ b/homeassistant/components/denonavr/__init__.py
@@ -4,7 +4,7 @@ import logging
 from denonavr.exceptions import AvrNetworkError, AvrTimoutError
 
 from homeassistant import config_entries, core
-from homeassistant.const import CONF_HOST
+from homeassistant.const import CONF_HOST, Platform
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.httpx_client import get_async_client
@@ -23,7 +23,7 @@ from .receiver import ConnectDenonAVR
 
 CONF_RECEIVER = "receiver"
 UNDO_UPDATE_LISTENER = "undo_update_listener"
-PLATFORMS = ["media_player"]
+PLATFORMS = [Platform.MEDIA_PLAYER]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/devolo_home_control/const.py b/homeassistant/components/devolo_home_control/const.py
index b15c0acf622..e2ac3a42416 100644
--- a/homeassistant/components/devolo_home_control/const.py
+++ b/homeassistant/components/devolo_home_control/const.py
@@ -1,9 +1,18 @@
 """Constants for the devolo_home_control integration."""
 import re
 
+from homeassistant.const import Platform
+
 DOMAIN = "devolo_home_control"
 DEFAULT_MYDEVOLO = "https://www.mydevolo.com"
-PLATFORMS = ["binary_sensor", "climate", "cover", "light", "sensor", "switch"]
+PLATFORMS = [
+    Platform.BINARY_SENSOR,
+    Platform.CLIMATE,
+    Platform.COVER,
+    Platform.LIGHT,
+    Platform.SENSOR,
+    Platform.SWITCH,
+]
 CONF_MYDEVOLO = "mydevolo_url"
 GATEWAY_SERIAL_PATTERN = re.compile(r"\d{16}")
 SUPPORTED_MODEL_TYPES = ["2600", "2601"]
diff --git a/homeassistant/components/devolo_home_network/const.py b/homeassistant/components/devolo_home_network/const.py
index 9276acebe41..bd7170bfde5 100644
--- a/homeassistant/components/devolo_home_network/const.py
+++ b/homeassistant/components/devolo_home_network/const.py
@@ -2,8 +2,10 @@
 
 from datetime import timedelta
 
+from homeassistant.const import Platform
+
 DOMAIN = "devolo_home_network"
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 PRODUCT = "product"
 SERIAL_NUMBER = "serial_number"
diff --git a/homeassistant/components/dexcom/const.py b/homeassistant/components/dexcom/const.py
index 40b7e32df6c..cb75f3bd500 100644
--- a/homeassistant/components/dexcom/const.py
+++ b/homeassistant/components/dexcom/const.py
@@ -1,8 +1,8 @@
 """Constants for the Dexcom integration."""
+from homeassistant.const import Platform
 
 DOMAIN = "dexcom"
-PLATFORMS = ["sensor"]
-
+PLATFORMS = [Platform.SENSOR]
 GLUCOSE_VALUE_ICON = "mdi:diabetes"
 
 GLUCOSE_TREND_ICON = [
diff --git a/homeassistant/components/directv/__init__.py b/homeassistant/components/directv/__init__.py
index 2fec28db14a..55961869f79 100644
--- a/homeassistant/components/directv/__init__.py
+++ b/homeassistant/components/directv/__init__.py
@@ -6,7 +6,7 @@ from datetime import timedelta
 from directv import DIRECTV, DIRECTVError
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST
+from homeassistant.const import CONF_HOST, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import config_validation as cv
@@ -16,7 +16,7 @@ from .const import DOMAIN
 
 CONFIG_SCHEMA = cv.deprecated(DOMAIN)
 
-PLATFORMS = ["media_player", "remote"]
+PLATFORMS = [Platform.MEDIA_PLAYER, Platform.REMOTE]
 SCAN_INTERVAL = timedelta(seconds=30)
 
 
diff --git a/homeassistant/components/dlna_dmr/__init__.py b/homeassistant/components/dlna_dmr/__init__.py
index 6a53490819f..d34d8550355 100644
--- a/homeassistant/components/dlna_dmr/__init__.py
+++ b/homeassistant/components/dlna_dmr/__init__.py
@@ -2,12 +2,12 @@
 from __future__ import annotations
 
 from homeassistant import config_entries
-from homeassistant.components.media_player.const import DOMAIN as MEDIA_PLAYER_DOMAIN
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 
 from .const import LOGGER
 
-PLATFORMS = [MEDIA_PLAYER_DOMAIN]
+PLATFORMS = [Platform.MEDIA_PLAYER]
 
 
 async def async_setup_entry(
diff --git a/homeassistant/components/doorbird/const.py b/homeassistant/components/doorbird/const.py
index 46a95f0d500..46c37e5b050 100644
--- a/homeassistant/components/doorbird/const.py
+++ b/homeassistant/components/doorbird/const.py
@@ -1,8 +1,8 @@
 """The DoorBird integration constants."""
-
+from homeassistant.const import Platform
 
 DOMAIN = "doorbird"
-PLATFORMS = ["switch", "camera"]
+PLATFORMS = [Platform.SWITCH, Platform.CAMERA]
 DOOR_STATION = "door_station"
 DOOR_STATION_INFO = "door_station_info"
 DOOR_STATION_EVENT_ENTITY_IDS = "door_station_event_entity_ids"
diff --git a/homeassistant/components/dsmr/const.py b/homeassistant/components/dsmr/const.py
index baf9f036a35..8f5620bfd7c 100644
--- a/homeassistant/components/dsmr/const.py
+++ b/homeassistant/components/dsmr/const.py
@@ -6,6 +6,7 @@ import logging
 from dsmr_parser import obis_references
 
 from homeassistant.components.sensor import SensorDeviceClass, SensorStateClass
+from homeassistant.const import Platform
 
 from .models import DSMRSensorEntityDescription
 
@@ -13,8 +14,7 @@ DOMAIN = "dsmr"
 
 LOGGER = logging.getLogger(__package__)
 
-PLATFORMS = ["sensor"]
-
+PLATFORMS = [Platform.SENSOR]
 CONF_DSMR_VERSION = "dsmr_version"
 CONF_RECONNECT_INTERVAL = "reconnect_interval"
 CONF_PRECISION = "precision"
diff --git a/homeassistant/components/dunehd/__init__.py b/homeassistant/components/dunehd/__init__.py
index 24851dac4e8..839f79bc3f4 100644
--- a/homeassistant/components/dunehd/__init__.py
+++ b/homeassistant/components/dunehd/__init__.py
@@ -6,12 +6,12 @@ from typing import Final
 from pdunehd import DuneHDPlayer
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST
+from homeassistant.const import CONF_HOST, Platform
 from homeassistant.core import HomeAssistant
 
 from .const import DOMAIN
 
-PLATFORMS: Final[list[str]] = ["media_player"]
+PLATFORMS: Final[list[Platform]] = [Platform.MEDIA_PLAYER]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/dynalite/const.py b/homeassistant/components/dynalite/const.py
index eda43305461..83cc639d1da 100644
--- a/homeassistant/components/dynalite/const.py
+++ b/homeassistant/components/dynalite/const.py
@@ -1,12 +1,12 @@
 """Constants for the Dynalite component."""
 import logging
 
-from homeassistant.const import CONF_ROOM
+from homeassistant.const import CONF_ROOM, Platform
 
 LOGGER = logging.getLogger(__package__)
 DOMAIN = "dynalite"
 
-PLATFORMS = ["light", "switch", "cover"]
+PLATFORMS = [Platform.LIGHT, Platform.SWITCH, Platform.COVER]
 
 
 CONF_ACTIVE = "active"
diff --git a/tests/components/atag/test_climate.py b/tests/components/atag/test_climate.py
index 3c9a9c3f820..ba6bc892e40 100644
--- a/tests/components/atag/test_climate.py
+++ b/tests/components/atag/test_climate.py
@@ -1,7 +1,7 @@
 """Tests for the Atag climate platform."""
 from unittest.mock import PropertyMock, patch
 
-from homeassistant.components.atag.climate import CLIMATE, DOMAIN, PRESET_MAP
+from homeassistant.components.atag.climate import DOMAIN, PRESET_MAP
 from homeassistant.components.climate import (
     ATTR_HVAC_ACTION,
     ATTR_HVAC_MODE,
@@ -13,7 +13,12 @@ from homeassistant.components.climate import (
 )
 from homeassistant.components.climate.const import CURRENT_HVAC_IDLE, PRESET_AWAY
 from homeassistant.components.homeassistant import DOMAIN as HA_DOMAIN
-from homeassistant.const import ATTR_ENTITY_ID, ATTR_TEMPERATURE, STATE_UNKNOWN
+from homeassistant.const import (
+    ATTR_ENTITY_ID,
+    ATTR_TEMPERATURE,
+    STATE_UNKNOWN,
+    Platform,
+)
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import entity_registry as er
 from homeassistant.setup import async_setup_component
@@ -21,7 +26,7 @@ from homeassistant.setup import async_setup_component
 from tests.components.atag import UID, init_integration
 from tests.test_util.aiohttp import AiohttpClientMocker
 
-CLIMATE_ID = f"{CLIMATE}.{DOMAIN}"
+CLIMATE_ID = f"{Platform.CLIMATE}.{DOMAIN}"
 
 
 async def test_climate(
@@ -33,7 +38,7 @@ async def test_climate(
 
     assert entity_registry.async_is_registered(CLIMATE_ID)
     entity = entity_registry.async_get(CLIMATE_ID)
-    assert entity.unique_id == f"{UID}-{CLIMATE}"
+    assert entity.unique_id == f"{UID}-{Platform.CLIMATE}"
     assert hass.states.get(CLIMATE_ID).attributes[ATTR_HVAC_ACTION] == CURRENT_HVAC_IDLE
 
 
@@ -44,7 +49,7 @@ async def test_setting_climate(
     await init_integration(hass, aioclient_mock)
     with patch("pyatag.entities.Climate.set_temp") as mock_set_temp:
         await hass.services.async_call(
-            CLIMATE,
+            Platform.CLIMATE,
             SERVICE_SET_TEMPERATURE,
             {ATTR_ENTITY_ID: CLIMATE_ID, ATTR_TEMPERATURE: 15},
             blocking=True,
@@ -54,7 +59,7 @@ async def test_setting_climate(
 
     with patch("pyatag.entities.Climate.set_preset_mode") as mock_set_preset:
         await hass.services.async_call(
-            CLIMATE,
+            Platform.CLIMATE,
             SERVICE_SET_PRESET_MODE,
             {ATTR_ENTITY_ID: CLIMATE_ID, ATTR_PRESET_MODE: PRESET_AWAY},
             blocking=True,
@@ -64,7 +69,7 @@ async def test_setting_climate(
 
     with patch("pyatag.entities.Climate.set_hvac_mode") as mock_set_hvac:
         await hass.services.async_call(
-            CLIMATE,
+            Platform.CLIMATE,
             SERVICE_SET_HVAC_MODE,
             {ATTR_ENTITY_ID: CLIMATE_ID, ATTR_HVAC_MODE: HVAC_MODE_HEAT},
             blocking=True,
diff --git a/tests/components/atag/test_water_heater.py b/tests/components/atag/test_water_heater.py
index 4c78302224d..df83fa6d40b 100644
--- a/tests/components/atag/test_water_heater.py
+++ b/tests/components/atag/test_water_heater.py
@@ -1,16 +1,16 @@
 """Tests for the Atag water heater platform."""
 from unittest.mock import patch
 
-from homeassistant.components.atag import DOMAIN, WATER_HEATER
+from homeassistant.components.atag import DOMAIN
 from homeassistant.components.water_heater import SERVICE_SET_TEMPERATURE
-from homeassistant.const import ATTR_ENTITY_ID, ATTR_TEMPERATURE
+from homeassistant.const import ATTR_ENTITY_ID, ATTR_TEMPERATURE, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import entity_registry as er
 
 from tests.components.atag import UID, init_integration
 from tests.test_util.aiohttp import AiohttpClientMocker
 
-WATER_HEATER_ID = f"{WATER_HEATER}.{DOMAIN}"
+WATER_HEATER_ID = f"{Platform.WATER_HEATER}.{DOMAIN}"
 
 
 async def test_water_heater(
@@ -23,7 +23,7 @@ async def test_water_heater(
 
         assert registry.async_is_registered(WATER_HEATER_ID)
         entry = registry.async_get(WATER_HEATER_ID)
-        assert entry.unique_id == f"{UID}-{WATER_HEATER}"
+        assert entry.unique_id == f"{UID}-{Platform.WATER_HEATER}"
 
 
 async def test_setting_target_temperature(
@@ -33,7 +33,7 @@ async def test_setting_target_temperature(
     await init_integration(hass, aioclient_mock)
     with patch("pyatag.entities.DHW.set_temp") as mock_set_temp:
         await hass.services.async_call(
-            WATER_HEATER,
+            Platform.WATER_HEATER,
             SERVICE_SET_TEMPERATURE,
             {ATTR_ENTITY_ID: WATER_HEATER_ID, ATTR_TEMPERATURE: 50},
             blocking=True,
diff --git a/tests/components/broadlink/test_remote.py b/tests/components/broadlink/test_remote.py
index abc500479ea..1ee48063613 100644
--- a/tests/components/broadlink/test_remote.py
+++ b/tests/components/broadlink/test_remote.py
@@ -2,13 +2,13 @@
 from base64 import b64decode
 from unittest.mock import call
 
-from homeassistant.components.broadlink.const import DOMAIN, REMOTE_DOMAIN
+from homeassistant.components.broadlink.const import DOMAIN
 from homeassistant.components.remote import (
     SERVICE_SEND_COMMAND,
     SERVICE_TURN_OFF,
     SERVICE_TURN_ON,
 )
-from homeassistant.const import STATE_OFF, STATE_ON
+from homeassistant.const import STATE_OFF, STATE_ON, Platform
 from homeassistant.helpers.entity_registry import async_entries_for_device
 
 from . import get_device
@@ -34,7 +34,7 @@ async def test_remote_setup_works(hass):
             {(DOMAIN, mock_setup.entry.unique_id)}
         )
         entries = async_entries_for_device(entity_registry, device_entry.id)
-        remotes = {entry for entry in entries if entry.domain == REMOTE_DOMAIN}
+        remotes = {entry for entry in entries if entry.domain == Platform.REMOTE}
         assert len(remotes) == 1
 
         remote = remotes.pop()
@@ -54,12 +54,12 @@ async def test_remote_send_command(hass):
             {(DOMAIN, mock_setup.entry.unique_id)}
         )
         entries = async_entries_for_device(entity_registry, device_entry.id)
-        remotes = {entry for entry in entries if entry.domain == REMOTE_DOMAIN}
+        remotes = {entry for entry in entries if entry.domain == Platform.REMOTE}
         assert len(remotes) == 1
 
         remote = remotes.pop()
         await hass.services.async_call(
-            REMOTE_DOMAIN,
+            Platform.REMOTE,
             SERVICE_SEND_COMMAND,
             {"entity_id": remote.entity_id, "command": "b64:" + IR_PACKET},
             blocking=True,
@@ -81,12 +81,12 @@ async def test_remote_turn_off_turn_on(hass):
             {(DOMAIN, mock_setup.entry.unique_id)}
         )
         entries = async_entries_for_device(entity_registry, device_entry.id)
-        remotes = {entry for entry in entries if entry.domain == REMOTE_DOMAIN}
+        remotes = {entry for entry in entries if entry.domain == Platform.REMOTE}
         assert len(remotes) == 1
 
         remote = remotes.pop()
         await hass.services.async_call(
-            REMOTE_DOMAIN,
+            Platform.REMOTE,
             SERVICE_TURN_OFF,
             {"entity_id": remote.entity_id},
             blocking=True,
@@ -94,7 +94,7 @@ async def test_remote_turn_off_turn_on(hass):
         assert hass.states.get(remote.entity_id).state == STATE_OFF
 
         await hass.services.async_call(
-            REMOTE_DOMAIN,
+            Platform.REMOTE,
             SERVICE_SEND_COMMAND,
             {"entity_id": remote.entity_id, "command": "b64:" + IR_PACKET},
             blocking=True,
@@ -102,7 +102,7 @@ async def test_remote_turn_off_turn_on(hass):
         assert mock_setup.api.send_data.call_count == 0
 
         await hass.services.async_call(
-            REMOTE_DOMAIN,
+            Platform.REMOTE,
             SERVICE_TURN_ON,
             {"entity_id": remote.entity_id},
             blocking=True,
@@ -110,7 +110,7 @@ async def test_remote_turn_off_turn_on(hass):
         assert hass.states.get(remote.entity_id).state == STATE_ON
 
         await hass.services.async_call(
-            REMOTE_DOMAIN,
+            Platform.REMOTE,
             SERVICE_SEND_COMMAND,
             {"entity_id": remote.entity_id, "command": "b64:" + IR_PACKET},
             blocking=True,
diff --git a/tests/components/broadlink/test_sensors.py b/tests/components/broadlink/test_sensors.py
index b7fccd2e2ff..28caa212278 100644
--- a/tests/components/broadlink/test_sensors.py
+++ b/tests/components/broadlink/test_sensors.py
@@ -1,8 +1,9 @@
 """Tests for Broadlink sensors."""
 from datetime import timedelta
 
-from homeassistant.components.broadlink.const import DOMAIN, SENSOR_DOMAIN
+from homeassistant.components.broadlink.const import DOMAIN
 from homeassistant.components.broadlink.updater import BroadlinkSP4UpdateManager
+from homeassistant.const import Platform
 from homeassistant.helpers.entity_registry import async_entries_for_device
 from homeassistant.util import dt
 
@@ -33,7 +34,7 @@ async def test_a1_sensor_setup(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 5
 
     sensors_and_states = {
@@ -70,7 +71,7 @@ async def test_a1_sensor_update(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 5
 
     mock_setup.api.check_sensors_raw.return_value = {
@@ -114,7 +115,7 @@ async def test_rm_pro_sensor_setup(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 1
 
     sensors_and_states = {
@@ -139,7 +140,7 @@ async def test_rm_pro_sensor_update(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 1
 
     mock_setup.api.check_sensors.return_value = {"temperature": 25.8}
@@ -173,7 +174,7 @@ async def test_rm_pro_filter_crazy_temperature(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 1
 
     mock_setup.api.check_sensors.return_value = {"temperature": -7}
@@ -205,7 +206,7 @@ async def test_rm_mini3_no_sensor(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 0
 
 
@@ -225,7 +226,7 @@ async def test_rm4_pro_hts2_sensor_setup(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 2
 
     sensors_and_states = {
@@ -253,7 +254,7 @@ async def test_rm4_pro_hts2_sensor_update(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 2
 
     mock_setup.api.check_sensors.return_value = {"temperature": 16.8, "humidity": 34.0}
@@ -288,7 +289,7 @@ async def test_rm4_pro_no_sensor(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = {entry for entry in entries if entry.domain == SENSOR_DOMAIN}
+    sensors = {entry for entry in entries if entry.domain == Platform.SENSOR}
     assert len(sensors) == 0
 
 
@@ -318,7 +319,7 @@ async def test_scb1e_sensor_setup(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 5
 
     sensors_and_states = {
@@ -363,7 +364,7 @@ async def test_scb1e_sensor_update(hass):
         {(DOMAIN, mock_setup.entry.unique_id)}
     )
     entries = async_entries_for_device(entity_registry, device_entry.id)
-    sensors = [entry for entry in entries if entry.domain == SENSOR_DOMAIN]
+    sensors = [entry for entry in entries if entry.domain == Platform.SENSOR]
     assert len(sensors) == 5
 
     mock_setup.api.get_state.return_value = {