diff --git a/homeassistant/components/habitica/__init__.py b/homeassistant/components/habitica/__init__.py
index a08932d9c1b..af67178185d 100644
--- a/homeassistant/components/habitica/__init__.py
+++ b/homeassistant/components/habitica/__init__.py
@@ -12,6 +12,7 @@ from homeassistant.const import (
     CONF_NAME,
     CONF_SENSORS,
     CONF_URL,
+    Platform,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_validation as cv
@@ -73,7 +74,7 @@ INSTANCE_LIST_SCHEMA = vol.All(
 )
 CONFIG_SCHEMA = vol.Schema({DOMAIN: INSTANCE_LIST_SCHEMA}, extra=vol.ALLOW_EXTRA)
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 SERVICE_API_CALL_SCHEMA = vol.Schema(
     {
diff --git a/homeassistant/components/harmony/const.py b/homeassistant/components/harmony/const.py
index c8e15ed0b0f..8df5b3d578c 100644
--- a/homeassistant/components/harmony/const.py
+++ b/homeassistant/components/harmony/const.py
@@ -1,8 +1,10 @@
 """Constants for the Harmony component."""
+from homeassistant.const import Platform
+
 DOMAIN = "harmony"
 SERVICE_SYNC = "sync"
 SERVICE_CHANGE_CHANNEL = "change_channel"
-PLATFORMS = ["remote", "switch", "select"]
+PLATFORMS = [Platform.REMOTE, Platform.SELECT, Platform.SWITCH]
 UNIQUE_ID = "unique_id"
 ACTIVITY_POWER_OFF = "PowerOff"
 HARMONY_OPTIONS_UPDATE = "harmony_options_update"
diff --git a/homeassistant/components/hassio/__init__.py b/homeassistant/components/hassio/__init__.py
index 7991c50563c..614ea928828 100644
--- a/homeassistant/components/hassio/__init__.py
+++ b/homeassistant/components/hassio/__init__.py
@@ -22,6 +22,7 @@ from homeassistant.const import (
     EVENT_CORE_CONFIG_UPDATE,
     SERVICE_HOMEASSISTANT_RESTART,
     SERVICE_HOMEASSISTANT_STOP,
+    Platform,
 )
 from homeassistant.core import DOMAIN as HASS_DOMAIN, HomeAssistant, callback
 from homeassistant.exceptions import HomeAssistantError
@@ -68,7 +69,7 @@ _LOGGER = logging.getLogger(__name__)
 
 STORAGE_KEY = DOMAIN
 STORAGE_VERSION = 1
-PLATFORMS = ["binary_sensor", "sensor"]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.SENSOR]
 
 CONF_FRONTEND_REPO = "development_repo"
 
diff --git a/homeassistant/components/heos/__init__.py b/homeassistant/components/heos/__init__.py
index 2dbab5e9409..bbe611c1db9 100644
--- a/homeassistant/components/heos/__init__.py
+++ b/homeassistant/components/heos/__init__.py
@@ -8,9 +8,8 @@ import logging
 from pyheos import Heos, HeosError, const as heos_const
 import voluptuous as vol
 
-from homeassistant.components.media_player.const import DOMAIN as MEDIA_PLAYER_DOMAIN
 from homeassistant.config_entries import SOURCE_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, callback
 from homeassistant.exceptions import ConfigEntryNotReady, HomeAssistantError
 import homeassistant.helpers.config_validation as cv
@@ -35,7 +34,7 @@ from .const import (
     SIGNAL_HEOS_UPDATED,
 )
 
-PLATFORMS = [MEDIA_PLAYER_DOMAIN]
+PLATFORMS = [Platform.MEDIA_PLAYER]
 
 CONFIG_SCHEMA = vol.Schema(
     vol.All(
@@ -130,7 +129,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         DATA_CONTROLLER_MANAGER: controller_manager,
         DATA_GROUP_MANAGER: group_manager,
         DATA_SOURCE_MANAGER: source_manager,
-        MEDIA_PLAYER_DOMAIN: players,
+        Platform.MEDIA_PLAYER: players,
         # Maps player_id to entity_id. Populated by the individual HeosMediaPlayer entities.
         DATA_ENTITY_ID_MAP: {},
     }
@@ -228,7 +227,7 @@ class ControllerManager:
                 )
             # update entity registry
             entity_id = self._entity_registry.async_get_entity_id(
-                MEDIA_PLAYER_DOMAIN, DOMAIN, str(old_id)
+                Platform.MEDIA_PLAYER, DOMAIN, str(old_id)
             )
             if entity_id:
                 self._entity_registry.async_update_entity(
@@ -355,7 +354,7 @@ class GroupManager:
             # Avoid calling async_update_groups when `DATA_ENTITY_ID_MAP` has not been
             # fully populated yet. This may only happen during early startup.
             if (
-                len(self._hass.data[DOMAIN][MEDIA_PLAYER_DOMAIN])
+                len(self._hass.data[DOMAIN][Platform.MEDIA_PLAYER])
                 <= len(self._hass.data[DOMAIN][DATA_ENTITY_ID_MAP])
                 and not self._initialized
             ):
diff --git a/homeassistant/components/hisense_aehw4a1/__init__.py b/homeassistant/components/hisense_aehw4a1/__init__.py
index 1134ac4181d..bc38d1df53f 100644
--- a/homeassistant/components/hisense_aehw4a1/__init__.py
+++ b/homeassistant/components/hisense_aehw4a1/__init__.py
@@ -8,14 +8,14 @@ import voluptuous as vol
 
 from homeassistant import config_entries
 from homeassistant.components.climate import DOMAIN as CLIMATE_DOMAIN
-from homeassistant.const import CONF_IP_ADDRESS
+from homeassistant.const import CONF_IP_ADDRESS, Platform
 import homeassistant.helpers.config_validation as cv
 
 from .const import DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = [CLIMATE_DOMAIN]
+PLATFORMS = [Platform.CLIMATE]
 
 
 def coerce_ip(value):
diff --git a/homeassistant/components/hlk_sw16/__init__.py b/homeassistant/components/hlk_sw16/__init__.py
index e36af7676ed..9fae14f8d1a 100644
--- a/homeassistant/components/hlk_sw16/__init__.py
+++ b/homeassistant/components/hlk_sw16/__init__.py
@@ -5,7 +5,7 @@ from hlk_sw16 import create_hlk_sw16_connection
 import voluptuous as vol
 
 from homeassistant.config_entries import SOURCE_IMPORT
-from homeassistant.const import CONF_HOST, CONF_NAME, CONF_PORT, CONF_SWITCHES
+from homeassistant.const import CONF_HOST, CONF_NAME, CONF_PORT, CONF_SWITCHES, Platform
 from homeassistant.core import callback
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.dispatcher import (
@@ -24,7 +24,7 @@ from .const import (
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["switch"]
+PLATFORMS = [Platform.SWITCH]
 
 DATA_DEVICE_REGISTER = "hlk_sw16_device_register"
 DATA_DEVICE_LISTENER = "hlk_sw16_device_listener"
diff --git a/homeassistant/components/home_connect/__init__.py b/homeassistant/components/home_connect/__init__.py
index 1fc446af401..26448893438 100644
--- a/homeassistant/components/home_connect/__init__.py
+++ b/homeassistant/components/home_connect/__init__.py
@@ -7,7 +7,7 @@ from requests import HTTPError
 import voluptuous as vol
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_CLIENT_ID, CONF_CLIENT_SECRET
+from homeassistant.const import CONF_CLIENT_ID, CONF_CLIENT_SECRET, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_entry_oauth2_flow, config_validation as cv
 from homeassistant.helpers.typing import ConfigType
@@ -32,7 +32,7 @@ CONFIG_SCHEMA = vol.Schema(
     extra=vol.ALLOW_EXTRA,
 )
 
-PLATFORMS = ["binary_sensor", "light", "sensor", "switch"]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.LIGHT, Platform.SENSOR, Platform.SWITCH]
 
 
 async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
diff --git a/homeassistant/components/homematicip_cloud/const.py b/homeassistant/components/homematicip_cloud/const.py
index 31ccb8b9bc7..a0f1c84015f 100644
--- a/homeassistant/components/homematicip_cloud/const.py
+++ b/homeassistant/components/homematicip_cloud/const.py
@@ -1,30 +1,21 @@
 """Constants for the HomematicIP Cloud 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.light import DOMAIN as LIGHT_DOMAIN
-from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
-from homeassistant.components.switch import DOMAIN as SWITCH_DOMAIN
-from homeassistant.components.weather import DOMAIN as WEATHER_DOMAIN
+from homeassistant.const import Platform
 
 _LOGGER = logging.getLogger(".")
 
 DOMAIN = "homematicip_cloud"
 
 PLATFORMS = [
-    ALARM_CONTROL_PANEL_DOMAIN,
-    BINARY_SENSOR_DOMAIN,
-    CLIMATE_DOMAIN,
-    COVER_DOMAIN,
-    LIGHT_DOMAIN,
-    SENSOR_DOMAIN,
-    SWITCH_DOMAIN,
-    WEATHER_DOMAIN,
+    Platform.ALARM_CONTROL_PANEL,
+    Platform.BINARY_SENSOR,
+    Platform.CLIMATE,
+    Platform.COVER,
+    Platform.LIGHT,
+    Platform.SENSOR,
+    Platform.SWITCH,
+    Platform.WEATHER,
 ]
 
 CONF_ACCESSPOINT = "accesspoint"
diff --git a/homeassistant/components/honeywell/__init__.py b/homeassistant/components/honeywell/__init__.py
index c61e4fc18eb..485562f8b5d 100644
--- a/homeassistant/components/honeywell/__init__.py
+++ b/homeassistant/components/honeywell/__init__.py
@@ -4,7 +4,7 @@ from datetime import timedelta
 
 import somecomfort
 
-from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
+from homeassistant.const import CONF_PASSWORD, CONF_USERNAME, Platform
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.util import Throttle
 
@@ -12,7 +12,7 @@ from .const import _LOGGER, CONF_DEV_ID, CONF_LOC_ID, DOMAIN
 
 UPDATE_LOOP_SLEEP_TIME = 5
 MIN_TIME_BETWEEN_UPDATES = timedelta(seconds=300)
-PLATFORMS = ["climate"]
+PLATFORMS = [Platform.CLIMATE]
 
 
 async def async_setup_entry(hass, config):
diff --git a/homeassistant/components/huawei_lte/__init__.py b/homeassistant/components/huawei_lte/__init__.py
index f63b84254fc..4f4451330f6 100644
--- a/homeassistant/components/huawei_lte/__init__.py
+++ b/homeassistant/components/huawei_lte/__init__.py
@@ -22,13 +22,7 @@ from requests.exceptions import Timeout
 from url_normalize import url_normalize
 import voluptuous as vol
 
-from homeassistant.components.binary_sensor import DOMAIN as BINARY_SENSOR_DOMAIN
-from homeassistant.components.device_tracker.const import (
-    DOMAIN as DEVICE_TRACKER_DOMAIN,
-)
 from homeassistant.components.notify import DOMAIN as NOTIFY_DOMAIN
-from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
-from homeassistant.components.switch import DOMAIN as SWITCH_DOMAIN
 from homeassistant.config_entries import SOURCE_IMPORT, ConfigEntry
 from homeassistant.const import (
     ATTR_MODEL,
@@ -40,6 +34,7 @@ from homeassistant.const import (
     CONF_URL,
     CONF_USERNAME,
     EVENT_HOMEASSISTANT_STOP,
+    Platform,
 )
 from homeassistant.core import HomeAssistant, ServiceCall
 from homeassistant.exceptions import ConfigEntryNotReady
@@ -123,12 +118,12 @@ CONFIG_SCHEMA = vol.Schema(
 
 SERVICE_SCHEMA = vol.Schema({vol.Optional(CONF_URL): cv.url})
 
-CONFIG_ENTRY_PLATFORMS = (
-    BINARY_SENSOR_DOMAIN,
-    DEVICE_TRACKER_DOMAIN,
-    SENSOR_DOMAIN,
-    SWITCH_DOMAIN,
-)
+PLATFORMS = [
+    Platform.BINARY_SENSOR,
+    Platform.DEVICE_TRACKER,
+    Platform.SENSOR,
+    Platform.SWITCH,
+]
 
 
 @attr.s
@@ -455,7 +450,7 @@ async def async_setup_entry(  # noqa: C901
         )
 
     # Forward config entry setup to platforms
-    hass.config_entries.async_setup_platforms(entry, CONFIG_ENTRY_PLATFORMS)
+    hass.config_entries.async_setup_platforms(entry, PLATFORMS)
 
     # Notify doesn't support config entry setup yet, load with discovery for now
     await discovery.async_load_platform(
@@ -495,9 +490,7 @@ async def async_unload_entry(hass: HomeAssistant, config_entry: ConfigEntry) ->
     """Unload config entry."""
 
     # Forward config entry unload to platforms
-    await hass.config_entries.async_unload_platforms(
-        config_entry, CONFIG_ENTRY_PLATFORMS
-    )
+    await hass.config_entries.async_unload_platforms(config_entry, PLATFORMS)
 
     # Forget about the router and invoke its cleanup
     router = hass.data[DOMAIN].routers.pop(config_entry.unique_id)
diff --git a/homeassistant/components/hue/bridge.py b/homeassistant/components/hue/bridge.py
index 5005f858a58..cda639bcf6c 100644
--- a/homeassistant/components/hue/bridge.py
+++ b/homeassistant/components/hue/bridge.py
@@ -14,7 +14,7 @@ import async_timeout
 
 from homeassistant import core
 from homeassistant.config_entries import SOURCE_IMPORT, ConfigEntry
-from homeassistant.const import CONF_API_KEY, CONF_HOST
+from homeassistant.const import CONF_API_KEY, CONF_HOST, Platform
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import aiohttp_client
 
@@ -26,8 +26,14 @@ from .v2.hue_event import async_setup_hue_events
 # How long should we sleep if the hub is busy
 HUB_BUSY_SLEEP = 0.5
 
-PLATFORMS_v1 = ["light", "binary_sensor", "sensor"]
-PLATFORMS_v2 = ["light", "binary_sensor", "sensor", "scene", "switch"]
+PLATFORMS_v1 = [Platform.BINARY_SENSOR, Platform.LIGHT, Platform.SENSOR]
+PLATFORMS_v2 = [
+    Platform.BINARY_SENSOR,
+    Platform.LIGHT,
+    Platform.SCENE,
+    Platform.SENSOR,
+    Platform.SWITCH,
+]
 
 
 class HueBridge:
diff --git a/homeassistant/components/huisbaasje/__init__.py b/homeassistant/components/huisbaasje/__init__.py
index 6c8df713344..f2b4ef8d4ef 100644
--- a/homeassistant/components/huisbaasje/__init__.py
+++ b/homeassistant/components/huisbaasje/__init__.py
@@ -6,7 +6,7 @@ import async_timeout
 from huisbaasje import Huisbaasje, HuisbaasjeException
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
+from homeassistant.const import CONF_PASSWORD, CONF_USERNAME, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
@@ -23,7 +23,7 @@ from .const import (
     SOURCE_TYPES,
 )
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/hunterdouglas_powerview/__init__.py b/homeassistant/components/hunterdouglas_powerview/__init__.py
index a9c620a4baa..304d7e13cc1 100644
--- a/homeassistant/components/hunterdouglas_powerview/__init__.py
+++ b/homeassistant/components/hunterdouglas_powerview/__init__.py
@@ -13,7 +13,7 @@ from aiopvapi.userdata import UserData
 import async_timeout
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST
+from homeassistant.const import CONF_HOST, Platform
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -55,7 +55,7 @@ PARALLEL_UPDATES = 1
 
 CONFIG_SCHEMA = cv.deprecated(DOMAIN)
 
-PLATFORMS = ["cover", "scene", "sensor"]
+PLATFORMS = [Platform.COVER, Platform.SCENE, Platform.SENSOR]
 _LOGGER = logging.getLogger(__name__)
 
 
diff --git a/homeassistant/components/hvv_departures/__init__.py b/homeassistant/components/hvv_departures/__init__.py
index 09b9d516bad..3c090249bc0 100644
--- a/homeassistant/components/hvv_departures/__init__.py
+++ b/homeassistant/components/hvv_departures/__init__.py
@@ -1,16 +1,14 @@
 """The HVV integration."""
 
-from homeassistant.components.binary_sensor import DOMAIN as DOMAIN_BINARY_SENSOR
-from homeassistant.components.sensor import DOMAIN as DOMAIN_SENSOR
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME
+from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import aiohttp_client
 
 from .const import DOMAIN
 from .hub import GTIHub
 
-PLATFORMS = [DOMAIN_SENSOR, DOMAIN_BINARY_SENSOR]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/ialarm/__init__.py b/homeassistant/components/ialarm/__init__.py
index af8fd0695e4..db9aa000066 100644
--- a/homeassistant/components/ialarm/__init__.py
+++ b/homeassistant/components/ialarm/__init__.py
@@ -7,14 +7,14 @@ from pyialarm import IAlarm
 
 from homeassistant.components.alarm_control_panel import SCAN_INTERVAL
 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
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
 from .const import DATA_COORDINATOR, DOMAIN, IALARM_TO_HASS
 
-PLATFORMS = ["alarm_control_panel"]
+PLATFORMS = [Platform.ALARM_CONTROL_PANEL]
 _LOGGER = logging.getLogger(__name__)
 
 
diff --git a/homeassistant/components/icloud/const.py b/homeassistant/components/icloud/const.py
index 58c62f8a868..231f2cc1d0a 100644
--- a/homeassistant/components/icloud/const.py
+++ b/homeassistant/components/icloud/const.py
@@ -1,4 +1,5 @@
 """iCloud component constants."""
+from homeassistant.const import Platform
 
 DOMAIN = "icloud"
 
@@ -14,7 +15,7 @@ DEFAULT_GPS_ACCURACY_THRESHOLD = 500  # meters
 STORAGE_KEY = DOMAIN
 STORAGE_VERSION = 2
 
-PLATFORMS = ["device_tracker", "sensor"]
+PLATFORMS = [Platform.DEVICE_TRACKER, Platform.SENSOR]
 
 # pyicloud.AppleDevice status
 DEVICE_BATTERY_LEVEL = "batteryLevel"
diff --git a/homeassistant/components/iotawatt/__init__.py b/homeassistant/components/iotawatt/__init__.py
index 7987004e594..55fc701cffd 100644
--- a/homeassistant/components/iotawatt/__init__.py
+++ b/homeassistant/components/iotawatt/__init__.py
@@ -1,11 +1,12 @@
 """The iotawatt integration."""
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 
 from .const import DOMAIN
 from .coordinator import IotawattUpdater
 
-PLATFORMS = ("sensor",)
+PLATFORMS = [Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/ipma/__init__.py b/homeassistant/components/ipma/__init__.py
index 1a26d375653..f24f8104bd8 100644
--- a/homeassistant/components/ipma/__init__.py
+++ b/homeassistant/components/ipma/__init__.py
@@ -1,10 +1,12 @@
 """Component for the Portuguese weather service - IPMA."""
+from homeassistant.const import Platform
+
 from .config_flow import IpmaFlowHandler  # noqa: F401
 from .const import DOMAIN  # noqa: F401
 
 DEFAULT_NAME = "ipma"
 
-PLATFORMS = ["weather"]
+PLATFORMS = [Platform.WEATHER]
 
 
 async def async_setup_entry(hass, entry):
diff --git a/homeassistant/components/ipp/__init__.py b/homeassistant/components/ipp/__init__.py
index d5930ac5f56..23ee5adc0e4 100644
--- a/homeassistant/components/ipp/__init__.py
+++ b/homeassistant/components/ipp/__init__.py
@@ -1,15 +1,20 @@
 """The Internet Printing Protocol (IPP) integration."""
 from __future__ import annotations
 
-from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_PORT, CONF_SSL, CONF_VERIFY_SSL
+from homeassistant.const import (
+    CONF_HOST,
+    CONF_PORT,
+    CONF_SSL,
+    CONF_VERIFY_SSL,
+    Platform,
+)
 from homeassistant.core import HomeAssistant
 
 from .const import CONF_BASE_PATH, DOMAIN
 from .coordinator import IPPDataUpdateCoordinator
 
-PLATFORMS = [SENSOR_DOMAIN]
+PLATFORMS = [Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/iqvia/__init__.py b/homeassistant/components/iqvia/__init__.py
index b0f7086cad7..56d90874eba 100644
--- a/homeassistant/components/iqvia/__init__.py
+++ b/homeassistant/components/iqvia/__init__.py
@@ -11,6 +11,7 @@ from pyiqvia import Client
 from pyiqvia.errors import IQVIAError
 
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import aiohttp_client
@@ -37,7 +38,7 @@ from .const import (
 DEFAULT_ATTRIBUTION = "Data provided by IQVIA™"
 DEFAULT_SCAN_INTERVAL = timedelta(minutes=30)
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/islamic_prayer_times/__init__.py b/homeassistant/components/islamic_prayer_times/__init__.py
index 8375b9d4c12..a55838970fe 100644
--- a/homeassistant/components/islamic_prayer_times/__init__.py
+++ b/homeassistant/components/islamic_prayer_times/__init__.py
@@ -7,6 +7,7 @@ from requests.exceptions import ConnectionError as ConnError
 import voluptuous as vol
 
 from homeassistant.config_entries import SOURCE_IMPORT
+from homeassistant.const import Platform
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import config_validation as cv
 from homeassistant.helpers.dispatcher import async_dispatcher_send
@@ -23,7 +24,7 @@ from .const import (
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 CONFIG_SCHEMA = vol.Schema(
     vol.All(
diff --git a/homeassistant/components/isy994/const.py b/homeassistant/components/isy994/const.py
index 8e634006ec2..0a7b02c1dac 100644
--- a/homeassistant/components/isy994/const.py
+++ b/homeassistant/components/isy994/const.py
@@ -15,14 +15,12 @@ from homeassistant.components.binary_sensor import (
     DEVICE_CLASS_SMOKE,
     DEVICE_CLASS_SOUND,
     DEVICE_CLASS_VIBRATION,
-    DOMAIN as BINARY_SENSOR,
 )
 from homeassistant.components.climate.const import (
     CURRENT_HVAC_COOL,
     CURRENT_HVAC_FAN,
     CURRENT_HVAC_HEAT,
     CURRENT_HVAC_IDLE,
-    DOMAIN as CLIMATE,
     FAN_AUTO,
     FAN_HIGH,
     FAN_MEDIUM,
@@ -37,12 +35,6 @@ from homeassistant.components.climate.const import (
     PRESET_AWAY,
     PRESET_BOOST,
 )
-from homeassistant.components.cover import DOMAIN as COVER
-from homeassistant.components.fan import DOMAIN as FAN
-from homeassistant.components.light import DOMAIN as LIGHT
-from homeassistant.components.lock import DOMAIN as LOCK
-from homeassistant.components.sensor import DOMAIN as SENSOR
-from homeassistant.components.switch import DOMAIN as SWITCH
 from homeassistant.const import (
     CONCENTRATION_PARTS_PER_MILLION,
     CURRENCY_CENT,
@@ -109,6 +101,7 @@ from homeassistant.const import (
     VOLUME_FLOW_RATE_CUBIC_METERS_PER_HOUR,
     VOLUME_GALLONS,
     VOLUME_LITERS,
+    Platform,
 )
 
 _LOGGER = logging.getLogger(__package__)
@@ -133,14 +126,29 @@ DEFAULT_VAR_SENSOR_STRING = "HA."
 KEY_ACTIONS = "actions"
 KEY_STATUS = "status"
 
-PLATFORMS = [BINARY_SENSOR, SENSOR, LOCK, FAN, COVER, LIGHT, SWITCH, CLIMATE]
-PROGRAM_PLATFORMS = [BINARY_SENSOR, LOCK, FAN, COVER, SWITCH]
+PLATFORMS = [
+    Platform.BINARY_SENSOR,
+    Platform.CLIMATE,
+    Platform.COVER,
+    Platform.FAN,
+    Platform.LIGHT,
+    Platform.LOCK,
+    Platform.SENSOR,
+    Platform.SWITCH,
+]
+PROGRAM_PLATFORMS = [
+    Platform.BINARY_SENSOR,
+    Platform.COVER,
+    Platform.FAN,
+    Platform.LOCK,
+    Platform.SWITCH,
+]
 
 SUPPORTED_BIN_SENS_CLASSES = ["moisture", "opening", "motion", "climate"]
 
 # ISY Scenes are more like Switches than Home Assistant Scenes
 # (they can turn off, and report their state)
-ISY_GROUP_PLATFORM = SWITCH
+ISY_GROUP_PLATFORM = Platform.SWITCH
 
 ISY994_ISY = "isy"
 ISY994_NODES = "isy994_nodes"
@@ -211,7 +219,7 @@ UOM_PERCENTAGE = "51"
 # Insteon Types: https://www.universal-devices.com/developers/wsdk/5.0.4/1_fam.xml
 # Z-Wave Categories: https://www.universal-devices.com/developers/wsdk/5.0.4/4_fam.xml
 NODE_FILTERS = {
-    BINARY_SENSOR: {
+    Platform.BINARY_SENSOR: {
         FILTER_UOM: [UOM_ON_OFF],
         FILTER_STATES: [],
         FILTER_NODE_DEF_ID: [
@@ -231,7 +239,7 @@ NODE_FILTERS = {
         ],  # Does a startswith() match; include the dot
         FILTER_ZWAVE_CAT: (["104", "112", "138"] + list(map(str, range(148, 180)))),
     },
-    SENSOR: {
+    Platform.SENSOR: {
         # This is just a more-readable way of including MOST uoms between 1-100
         # (Remember that range() is non-inclusive of the stop value)
         FILTER_UOM: (
@@ -255,28 +263,28 @@ NODE_FILTERS = {
         FILTER_INSTEON_TYPE: ["0.16.", "0.17.", "0.18.", "9.0.", "9.7."],
         FILTER_ZWAVE_CAT: (["118", "143"] + list(map(str, range(180, 186)))),
     },
-    LOCK: {
+    Platform.LOCK: {
         FILTER_UOM: ["11"],
         FILTER_STATES: ["locked", "unlocked"],
         FILTER_NODE_DEF_ID: ["DoorLock"],
         FILTER_INSTEON_TYPE: [TYPE_CATEGORY_LOCK, "4.64."],
         FILTER_ZWAVE_CAT: ["111"],
     },
-    FAN: {
+    Platform.FAN: {
         FILTER_UOM: [],
         FILTER_STATES: ["off", "low", "med", "high"],
         FILTER_NODE_DEF_ID: ["FanLincMotor"],
         FILTER_INSTEON_TYPE: ["1.46."],
         FILTER_ZWAVE_CAT: [],
     },
-    COVER: {
+    Platform.COVER: {
         FILTER_UOM: [UOM_BARRIER],
         FILTER_STATES: ["open", "closed", "closing", "opening", "stopped"],
         FILTER_NODE_DEF_ID: ["DimmerMotorSwitch_ADV"],
         FILTER_INSTEON_TYPE: [TYPE_CATEGORY_COVER],
         FILTER_ZWAVE_CAT: [],
     },
-    LIGHT: {
+    Platform.LIGHT: {
         FILTER_UOM: ["51"],
         FILTER_STATES: ["on", "off", "%"],
         FILTER_NODE_DEF_ID: [
@@ -293,7 +301,7 @@ NODE_FILTERS = {
         FILTER_INSTEON_TYPE: [TYPE_CATEGORY_DIMMABLE],
         FILTER_ZWAVE_CAT: ["109", "119"],
     },
-    SWITCH: {
+    Platform.SWITCH: {
         FILTER_UOM: ["78"],
         FILTER_STATES: ["on", "off"],
         FILTER_NODE_DEF_ID: [
@@ -323,7 +331,7 @@ NODE_FILTERS = {
         ],
         FILTER_ZWAVE_CAT: ["121", "122", "123", "137", "141", "147"],
     },
-    CLIMATE: {
+    Platform.CLIMATE: {
         FILTER_UOM: [UOM_ON_OFF],
         FILTER_STATES: ["heating", "cooling", "idle", "fan_only", "off"],
         FILTER_NODE_DEF_ID: ["TempLinc", "Thermostat"],
diff --git a/homeassistant/components/izone/__init__.py b/homeassistant/components/izone/__init__.py
index 2ac66963638..d49de8c0e55 100644
--- a/homeassistant/components/izone/__init__.py
+++ b/homeassistant/components/izone/__init__.py
@@ -2,7 +2,7 @@
 import voluptuous as vol
 
 from homeassistant import config_entries
-from homeassistant.const import CONF_EXCLUDE
+from homeassistant.const import CONF_EXCLUDE, Platform
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.typing import ConfigType
@@ -10,7 +10,7 @@ from homeassistant.helpers.typing import ConfigType
 from .const import DATA_CONFIG, IZONE
 from .discovery import async_start_discovery_service, async_stop_discovery_service
 
-PLATFORMS = ["climate"]
+PLATFORMS = [Platform.CLIMATE]
 
 CONFIG_SCHEMA = vol.Schema(
     {
diff --git a/homeassistant/components/juicenet/__init__.py b/homeassistant/components/juicenet/__init__.py
index 41097589244..92d8de8bc0a 100644
--- a/homeassistant/components/juicenet/__init__.py
+++ b/homeassistant/components/juicenet/__init__.py
@@ -7,7 +7,7 @@ from pyjuicenet import Api, TokenError
 import voluptuous as vol
 
 from homeassistant.config_entries import SOURCE_IMPORT, ConfigEntry
-from homeassistant.const import CONF_ACCESS_TOKEN
+from homeassistant.const import CONF_ACCESS_TOKEN, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import config_validation as cv
@@ -20,7 +20,7 @@ from .device import JuiceNetApi
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["sensor", "switch"]
+PLATFORMS = [Platform.SENSOR, Platform.SWITCH]
 
 CONFIG_SCHEMA = vol.Schema(
     vol.All(
diff --git a/homeassistant/components/keenetic_ndms2/__init__.py b/homeassistant/components/keenetic_ndms2/__init__.py
index 2af7434d2e4..94a249df209 100644
--- a/homeassistant/components/keenetic_ndms2/__init__.py
+++ b/homeassistant/components/keenetic_ndms2/__init__.py
@@ -3,10 +3,8 @@ from __future__ import annotations
 
 import logging
 
-from homeassistant.components.binary_sensor import DOMAIN as BINARY_SENSOR_DOMAIN
-from homeassistant.components.device_tracker import DOMAIN as DEVICE_TRACKER_DOMAIN
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_SCAN_INTERVAL
+from homeassistant.const import CONF_HOST, CONF_SCAN_INTERVAL, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import device_registry, entity_registry
 
@@ -25,7 +23,7 @@ from .const import (
 )
 from .router import KeeneticRouter
 
-PLATFORMS = [BINARY_SENSOR_DOMAIN, DEVICE_TRACKER_DOMAIN]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.DEVICE_TRACKER]
 _LOGGER = logging.getLogger(__name__)
 
 
@@ -80,7 +78,7 @@ async def async_unload_entry(hass: HomeAssistant, config_entry: ConfigEntry) ->
         for entity_entry in list(ent_reg.entities.values()):
             if (
                 entity_entry.config_entry_id == config_entry.entry_id
-                and entity_entry.domain == DEVICE_TRACKER_DOMAIN
+                and entity_entry.domain == Platform.DEVICE_TRACKER
             ):
                 mac = entity_entry.unique_id.partition("_")[0]
                 if mac not in keep_devices:
diff --git a/homeassistant/components/kmtronic/__init__.py b/homeassistant/components/kmtronic/__init__.py
index 72c0c772aec..a7637879fc1 100644
--- a/homeassistant/components/kmtronic/__init__.py
+++ b/homeassistant/components/kmtronic/__init__.py
@@ -8,14 +8,14 @@ from pykmtronic.auth import Auth
 from pykmtronic.hub import KMTronicHubAPI
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME
+from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import aiohttp_client
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
 from .const import DATA_COORDINATOR, DATA_HUB, DOMAIN, MANUFACTURER, UPDATE_LISTENER
 
-PLATFORMS = ["switch"]
+PLATFORMS = [Platform.SWITCH]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/kodi/__init__.py b/homeassistant/components/kodi/__init__.py
index 7c7740e8fe8..f5e58f3c6a1 100644
--- a/homeassistant/components/kodi/__init__.py
+++ b/homeassistant/components/kodi/__init__.py
@@ -12,6 +12,7 @@ from homeassistant.const import (
     CONF_SSL,
     CONF_USERNAME,
     EVENT_HOMEASSISTANT_STOP,
+    Platform,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -25,7 +26,7 @@ from .const import (
 )
 
 _LOGGER = logging.getLogger(__name__)
-PLATFORMS = ["media_player"]
+PLATFORMS = [Platform.MEDIA_PLAYER]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/konnected/__init__.py b/homeassistant/components/konnected/__init__.py
index 43537154e41..f018d1a5133 100644
--- a/homeassistant/components/konnected/__init__.py
+++ b/homeassistant/components/konnected/__init__.py
@@ -31,6 +31,7 @@ from homeassistant.const import (
     CONF_ZONE,
     STATE_OFF,
     STATE_ON,
+    Platform,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_validation as cv
@@ -216,7 +217,7 @@ CONFIG_SCHEMA = vol.Schema(
 )
 
 YAML_CONFIGS = "yaml_configs"
-PLATFORMS = ["binary_sensor", "sensor", "switch"]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.SENSOR, Platform.SWITCH]
 
 
 async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
diff --git a/homeassistant/components/kostal_plenticore/__init__.py b/homeassistant/components/kostal_plenticore/__init__.py
index f5c973cc499..a42ad0a64ff 100644
--- a/homeassistant/components/kostal_plenticore/__init__.py
+++ b/homeassistant/components/kostal_plenticore/__init__.py
@@ -4,6 +4,7 @@ import logging
 from kostal.plenticore import PlenticoreApiException
 
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 
 from .const import DOMAIN
@@ -11,7 +12,7 @@ from .helper import Plenticore
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["select", "sensor", "switch"]
+PLATFORMS = [Platform.SELECT, Platform.SENSOR, Platform.SWITCH]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/kraken/__init__.py b/homeassistant/components/kraken/__init__.py
index 5b1fd2626e3..bf01f27673d 100644
--- a/homeassistant/components/kraken/__init__.py
+++ b/homeassistant/components/kraken/__init__.py
@@ -10,7 +10,7 @@ import krakenex
 import pykrakenapi
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_SCAN_INTERVAL
+from homeassistant.const import CONF_SCAN_INTERVAL, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.dispatcher import async_dispatcher_send
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
@@ -27,7 +27,7 @@ from .utils import get_tradable_asset_pairs
 
 CALL_RATE_LIMIT_SLEEP = 1
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/kulersky/__init__.py b/homeassistant/components/kulersky/__init__.py
index 0ddac1850d7..39c0d0a5b84 100644
--- a/homeassistant/components/kulersky/__init__.py
+++ b/homeassistant/components/kulersky/__init__.py
@@ -1,11 +1,12 @@
 """Kuler Sky lights integration."""
 
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 
 from .const import DATA_ADDRESSES, DATA_DISCOVERY_SUBSCRIPTION, DOMAIN
 
-PLATFORMS = ["light"]
+PLATFORMS = [Platform.LIGHT]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/lcn/const.py b/homeassistant/components/lcn/const.py
index faef86dc70a..f2059827e84 100644
--- a/homeassistant/components/lcn/const.py
+++ b/homeassistant/components/lcn/const.py
@@ -8,9 +8,18 @@ from homeassistant.const import (
     TEMP_CELSIUS,
     TEMP_FAHRENHEIT,
     TEMP_KELVIN,
+    Platform,
 )
 
-PLATFORMS = ["binary_sensor", "climate", "cover", "light", "scene", "sensor", "switch"]
+PLATFORMS = [
+    Platform.BINARY_SENSOR,
+    Platform.CLIMATE,
+    Platform.COVER,
+    Platform.LIGHT,
+    Platform.SCENE,
+    Platform.SENSOR,
+    Platform.SWITCH,
+]
 
 DOMAIN = "lcn"
 DATA_LCN = "lcn"
diff --git a/homeassistant/components/lifx/__init__.py b/homeassistant/components/lifx/__init__.py
index b0b67450b5e..6d967ea9c69 100644
--- a/homeassistant/components/lifx/__init__.py
+++ b/homeassistant/components/lifx/__init__.py
@@ -3,7 +3,7 @@ import voluptuous as vol
 
 from homeassistant import config_entries
 from homeassistant.components.light import DOMAIN as LIGHT_DOMAIN
-from homeassistant.const import CONF_PORT
+from homeassistant.const import CONF_PORT, Platform
 import homeassistant.helpers.config_validation as cv
 
 from .const import DOMAIN
@@ -26,7 +26,7 @@ CONFIG_SCHEMA = vol.Schema(
 
 DATA_LIFX_MANAGER = "lifx_manager"
 
-PLATFORMS = [LIGHT_DOMAIN]
+PLATFORMS = [Platform.LIGHT]
 
 
 async def async_setup(hass, config):
diff --git a/homeassistant/components/litejet/const.py b/homeassistant/components/litejet/const.py
index 82521092106..baeadd7f4a9 100644
--- a/homeassistant/components/litejet/const.py
+++ b/homeassistant/components/litejet/const.py
@@ -1,10 +1,11 @@
 """LiteJet constants."""
+from homeassistant.const import Platform
 
 DOMAIN = "litejet"
 
 CONF_EXCLUDE_NAMES = "exclude_names"
 CONF_INCLUDE_SWITCHES = "include_switches"
 
-PLATFORMS = ["light", "switch", "scene"]
+PLATFORMS = [Platform.LIGHT, Platform.SCENE, Platform.SWITCH]
 
 CONF_DEFAULT_TRANSITION = "default_transition"
diff --git a/homeassistant/components/litterrobot/__init__.py b/homeassistant/components/litterrobot/__init__.py
index d972ecc79d9..90c432010d7 100644
--- a/homeassistant/components/litterrobot/__init__.py
+++ b/homeassistant/components/litterrobot/__init__.py
@@ -2,19 +2,21 @@
 
 from pylitterbot.exceptions import LitterRobotException, LitterRobotLoginException
 
-from homeassistant.components.button import DOMAIN as BUTTON_DOMAIN
-from homeassistant.components.select import DOMAIN as SELECT_DOMAIN
-from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
-from homeassistant.components.switch import DOMAIN as SWITCH_DOMAIN
-from homeassistant.components.vacuum import DOMAIN as VACUUM_DOMAIN
 from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 
 from .const import DOMAIN
 from .hub import LitterRobotHub
 
-PLATFORMS = [BUTTON_DOMAIN, SELECT_DOMAIN, SENSOR_DOMAIN, SWITCH_DOMAIN, VACUUM_DOMAIN]
+PLATFORMS = [
+    Platform.BUTTON,
+    Platform.SELECT,
+    Platform.SENSOR,
+    Platform.SWITCH,
+    Platform.VACUUM,
+]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/local_ip/const.py b/homeassistant/components/local_ip/const.py
index 0bac6d874d1..b079ec87663 100644
--- a/homeassistant/components/local_ip/const.py
+++ b/homeassistant/components/local_ip/const.py
@@ -1,6 +1,7 @@
 """Local IP constants."""
+from homeassistant.const import Platform
 
 DOMAIN = "local_ip"
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 SENSOR = "address"
diff --git a/homeassistant/components/locative/__init__.py b/homeassistant/components/locative/__init__.py
index 548b0a2d1fe..ec61cbbcdc7 100644
--- a/homeassistant/components/locative/__init__.py
+++ b/homeassistant/components/locative/__init__.py
@@ -7,13 +7,13 @@ import logging
 from aiohttp import web
 import voluptuous as vol
 
-from homeassistant.components.device_tracker import DOMAIN as DEVICE_TRACKER
 from homeassistant.const import (
     ATTR_ID,
     ATTR_LATITUDE,
     ATTR_LONGITUDE,
     CONF_WEBHOOK_ID,
     STATE_NOT_HOME,
+    Platform,
 )
 from homeassistant.helpers import config_entry_flow
 import homeassistant.helpers.config_validation as cv
@@ -24,7 +24,7 @@ _LOGGER = logging.getLogger(__name__)
 DOMAIN = "locative"
 TRACKER_UPDATE = f"{DOMAIN}_tracker_update"
 
-PLATFORMS = [DEVICE_TRACKER]
+PLATFORMS = [Platform.DEVICE_TRACKER]
 
 ATTR_DEVICE_ID = "device"
 ATTR_TRIGGER = "trigger"
@@ -82,7 +82,7 @@ async def handle_webhook(hass, webhook_id, request):
         return web.Response(text=f"Setting location to {location_name}")
 
     if direction == "exit":
-        current_state = hass.states.get(f"{DEVICE_TRACKER}.{device}")
+        current_state = hass.states.get(f"{Platform.DEVICE_TRACKER}.{device}")
 
         if current_state is None or current_state.state == location_name:
             location_name = STATE_NOT_HOME
diff --git a/homeassistant/components/logi_circle/__init__.py b/homeassistant/components/logi_circle/__init__.py
index 45b34928a30..01034a3a5ca 100644
--- a/homeassistant/components/logi_circle/__init__.py
+++ b/homeassistant/components/logi_circle/__init__.py
@@ -18,6 +18,7 @@ from homeassistant.const import (
     CONF_MONITORED_CONDITIONS,
     CONF_SENSORS,
     EVENT_HOMEASSISTANT_STOP,
+    Platform,
 )
 from homeassistant.helpers import config_validation as cv
 from homeassistant.helpers.dispatcher import async_dispatcher_send
@@ -48,7 +49,7 @@ SERVICE_LIVESTREAM_RECORD = "livestream_record"
 ATTR_VALUE = "value"
 ATTR_DURATION = "duration"
 
-PLATFORMS = ["camera", "sensor"]
+PLATFORMS = [Platform.CAMERA, Platform.SENSOR]
 
 SENSOR_KEYS = [desc.key for desc in SENSOR_TYPES]
 
diff --git a/homeassistant/components/lookin/const.py b/homeassistant/components/lookin/const.py
index 1605a169592..d9b1141aa97 100644
--- a/homeassistant/components/lookin/const.py
+++ b/homeassistant/components/lookin/const.py
@@ -3,8 +3,7 @@ from __future__ import annotations
 
 from typing import Final
 
+from homeassistant.const import Platform
+
 DOMAIN: Final = "lookin"
-PLATFORMS: Final = [
-    "sensor",
-    "climate",
-]
+PLATFORMS: Final = [Platform.CLIMATE, Platform.SENSOR]
diff --git a/homeassistant/components/luftdaten/__init__.py b/homeassistant/components/luftdaten/__init__.py
index f8a67fff2f3..63b9965243e 100644
--- a/homeassistant/components/luftdaten/__init__.py
+++ b/homeassistant/components/luftdaten/__init__.py
@@ -21,6 +21,7 @@ from homeassistant.const import (
     PERCENTAGE,
     PRESSURE_PA,
     TEMP_CELSIUS,
+    Platform,
 )
 from homeassistant.core import callback
 from homeassistant.exceptions import ConfigEntryNotReady
@@ -38,7 +39,7 @@ DATA_LUFTDATEN_CLIENT = "data_luftdaten_client"
 DATA_LUFTDATEN_LISTENER = "data_luftdaten_listener"
 DEFAULT_ATTRIBUTION = "Data provided by luftdaten.info"
 
-PLATFORMS = ["sensor"]
+PLATFORMS = [Platform.SENSOR]
 
 SENSOR_HUMIDITY = "humidity"
 SENSOR_PM10 = "P1"
diff --git a/homeassistant/components/lutron_caseta/__init__.py b/homeassistant/components/lutron_caseta/__init__.py
index e1a93385d31..3c74e378336 100644
--- a/homeassistant/components/lutron_caseta/__init__.py
+++ b/homeassistant/components/lutron_caseta/__init__.py
@@ -12,7 +12,7 @@ from pylutron_caseta.smartbridge import Smartbridge
 import voluptuous as vol
 
 from homeassistant import config_entries
-from homeassistant.const import CONF_HOST
+from homeassistant.const import CONF_HOST, Platform
 from homeassistant.core import callback
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import device_registry as dr
@@ -63,7 +63,14 @@ CONFIG_SCHEMA = vol.Schema(
     extra=vol.ALLOW_EXTRA,
 )
 
-PLATFORMS = ["light", "switch", "cover", "scene", "fan", "binary_sensor"]
+PLATFORMS = [
+    Platform.BINARY_SENSOR,
+    Platform.COVER,
+    Platform.FAN,
+    Platform.LIGHT,
+    Platform.SCENE,
+    Platform.SWITCH,
+]
 
 
 async def async_setup(hass, base_config):
diff --git a/homeassistant/components/lyric/__init__.py b/homeassistant/components/lyric/__init__.py
index a9d5cbdec7d..623abb54c4b 100644
--- a/homeassistant/components/lyric/__init__.py
+++ b/homeassistant/components/lyric/__init__.py
@@ -13,7 +13,7 @@ import async_timeout
 import voluptuous as vol
 
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_CLIENT_ID, CONF_CLIENT_SECRET
+from homeassistant.const import CONF_CLIENT_ID, CONF_CLIENT_SECRET, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed
 from homeassistant.helpers import (
@@ -48,7 +48,7 @@ CONFIG_SCHEMA = vol.Schema(
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = ["climate", "sensor"]
+PLATFORMS = [Platform.CLIMATE, Platform.SENSOR]
 
 
 async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool: