diff --git a/.strict-typing b/.strict-typing
index 9ed4bf53497..958c53d07db 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -87,6 +87,7 @@ homeassistant.components.camera.*
 homeassistant.components.canary.*
 homeassistant.components.clickatell.*
 homeassistant.components.clicksend.*
+homeassistant.components.cloud.*
 homeassistant.components.configurator.*
 homeassistant.components.cover.*
 homeassistant.components.cpuspeed.*
diff --git a/homeassistant/components/alexa/config.py b/homeassistant/components/alexa/config.py
index e086d525cf1..d47a548979e 100644
--- a/homeassistant/components/alexa/config.py
+++ b/homeassistant/components/alexa/config.py
@@ -1,4 +1,6 @@
 """Config helpers for Alexa."""
+from __future__ import annotations
+
 from abc import ABC, abstractmethod
 import asyncio
 import logging
@@ -17,15 +19,15 @@ _LOGGER = logging.getLogger(__name__)
 class AbstractConfig(ABC):
     """Hold the configuration for Alexa."""
 
+    _store: AlexaConfigStore
     _unsub_proactive_report: CALLBACK_TYPE | None = None
 
     def __init__(self, hass: HomeAssistant) -> None:
         """Initialize abstract config."""
         self.hass = hass
         self._enable_proactive_mode_lock = asyncio.Lock()
-        self._store = None
 
-    async def async_initialize(self):
+    async def async_initialize(self) -> None:
         """Perform async initialization of config."""
         self._store = AlexaConfigStore(self.hass)
         await self._store.async_load()
@@ -65,7 +67,7 @@ class AbstractConfig(ABC):
     def user_identifier(self):
         """Return an identifier for the user that represents this config."""
 
-    async def async_enable_proactive_mode(self):
+    async def async_enable_proactive_mode(self) -> None:
         """Enable proactive mode."""
         _LOGGER.debug("Enable proactive mode")
         async with self._enable_proactive_mode_lock:
@@ -75,7 +77,7 @@ class AbstractConfig(ABC):
                 self.hass, self
             )
 
-    async def async_disable_proactive_mode(self):
+    async def async_disable_proactive_mode(self) -> None:
         """Disable proactive mode."""
         _LOGGER.debug("Disable proactive mode")
         if unsub_func := self._unsub_proactive_report:
@@ -105,7 +107,7 @@ class AbstractConfig(ABC):
         """Return authorization status."""
         return self._store.authorized
 
-    async def set_authorized(self, authorized):
+    async def set_authorized(self, authorized) -> None:
         """Set authorization status.
 
         - Set when an incoming message is received from Alexa.
diff --git a/homeassistant/components/alexa/state_report.py b/homeassistant/components/alexa/state_report.py
index a189c364c02..ebab3bcee8c 100644
--- a/homeassistant/components/alexa/state_report.py
+++ b/homeassistant/components/alexa/state_report.py
@@ -5,7 +5,7 @@ import asyncio
 from http import HTTPStatus
 import json
 import logging
-from typing import cast
+from typing import TYPE_CHECKING, cast
 
 import aiohttp
 import async_timeout
@@ -23,6 +23,9 @@ from .entities import ENTITY_ADAPTERS, AlexaEntity, generate_alexa_id
 from .errors import NoTokenAvailable, RequireRelink
 from .messages import AlexaResponse
 
+if TYPE_CHECKING:
+    from .config import AbstractConfig
+
 _LOGGER = logging.getLogger(__name__)
 DEFAULT_TIMEOUT = 10
 
@@ -188,7 +191,9 @@ async def async_send_changereport_message(
     )
 
 
-async def async_send_add_or_update_message(hass, config, entity_ids):
+async def async_send_add_or_update_message(
+    hass: HomeAssistant, config: AbstractConfig, entity_ids: list[str]
+) -> aiohttp.ClientResponse:
     """Send an AddOrUpdateReport message for entities.
 
     https://developer.amazon.com/docs/device-apis/alexa-discovery.html#add-or-update-report
@@ -223,7 +228,9 @@ async def async_send_add_or_update_message(hass, config, entity_ids):
     )
 
 
-async def async_send_delete_message(hass, config, entity_ids):
+async def async_send_delete_message(
+    hass: HomeAssistant, config: AbstractConfig, entity_ids: list[str]
+) -> aiohttp.ClientResponse:
     """Send an DeleteReport message for entities.
 
     https://developer.amazon.com/docs/device-apis/alexa-discovery.html#deletereport-event
diff --git a/homeassistant/components/cloud/__init__.py b/homeassistant/components/cloud/__init__.py
index 0af85fe9d4d..620e650315a 100644
--- a/homeassistant/components/cloud/__init__.py
+++ b/homeassistant/components/cloud/__init__.py
@@ -3,7 +3,7 @@ from __future__ import annotations
 
 import asyncio
 from collections.abc import Awaitable, Callable
-from datetime import timedelta
+from datetime import datetime, timedelta
 from enum import Enum
 
 from hass_nabucasa import Cloud
@@ -18,7 +18,7 @@ from homeassistant.const import (
     EVENT_HOMEASSISTANT_STOP,
     Platform,
 )
-from homeassistant.core import HassJob, HomeAssistant, ServiceCall, callback
+from homeassistant.core import Event, HassJob, HomeAssistant, ServiceCall, callback
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import config_validation as cv, entityfilter
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -31,7 +31,6 @@ from homeassistant.helpers.event import async_call_later
 from homeassistant.helpers.service import async_register_admin_service
 from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import bind_hass
-from homeassistant.util.aiohttp import MockRequest
 
 from . import account_link, http_api
 from .client import CloudClient
@@ -184,8 +183,10 @@ async def async_create_cloudhook(hass: HomeAssistant, webhook_id: str) -> str:
     if not async_is_logged_in(hass):
         raise CloudNotAvailable
 
-    hook = await hass.data[DOMAIN].cloudhooks.async_create(webhook_id, True)
-    return hook["cloudhook_url"]
+    cloud: Cloud[CloudClient] = hass.data[DOMAIN]
+    hook = await cloud.cloudhooks.async_create(webhook_id, True)
+    cloudhook_url: str = hook["cloudhook_url"]
+    return cloudhook_url
 
 
 @bind_hass
@@ -213,14 +214,6 @@ def async_remote_ui_url(hass: HomeAssistant) -> str:
     return f"https://{remote_domain}"
 
 
-def is_cloudhook_request(request):
-    """Test if a request came from a cloudhook.
-
-    Async friendly.
-    """
-    return isinstance(request, MockRequest)
-
-
 async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Initialize the Home Assistant cloud."""
     # Process configs
@@ -243,7 +236,7 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     cloud = hass.data[DOMAIN] = Cloud(client, **kwargs)
     cloud.iot.register_on_connect(client.on_cloud_connected)
 
-    async def _shutdown(event):
+    async def _shutdown(event: Event) -> None:
         """Shutdown event."""
         await cloud.stop()
 
@@ -263,7 +256,7 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
         hass, DOMAIN, SERVICE_REMOTE_DISCONNECT, _service_handler
     )
 
-    async def async_startup_repairs(_=None) -> None:
+    async def async_startup_repairs(_: datetime) -> None:
         """Create repair issues after startup."""
         if not cloud.is_logged_in:
             return
@@ -273,7 +266,7 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
 
     loaded = False
 
-    async def _on_start():
+    async def _on_start() -> None:
         """Discover platforms."""
         nonlocal loaded
 
@@ -292,19 +285,19 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
         await async_load_platform(hass, Platform.TTS, DOMAIN, tts_info, config)
         await asyncio.gather(stt_platform_loaded.wait(), tts_platform_loaded.wait())
 
-    async def _on_connect():
+    async def _on_connect() -> None:
         """Handle cloud connect."""
         async_dispatcher_send(
             hass, SIGNAL_CLOUD_CONNECTION_STATE, CloudConnectionState.CLOUD_CONNECTED
         )
 
-    async def _on_disconnect():
+    async def _on_disconnect() -> None:
         """Handle cloud disconnect."""
         async_dispatcher_send(
             hass, SIGNAL_CLOUD_CONNECTION_STATE, CloudConnectionState.CLOUD_DISCONNECTED
         )
 
-    async def _on_initialized():
+    async def _on_initialized() -> None:
         """Update preferences."""
         await prefs.async_update(remote_domain=cloud.remote.instance_domain)
 
@@ -330,7 +323,7 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
 
 
 @callback
-def _remote_handle_prefs_updated(cloud: Cloud) -> None:
+def _remote_handle_prefs_updated(cloud: Cloud[CloudClient]) -> None:
     """Handle remote preferences updated."""
     cur_pref = cloud.client.prefs.remote_enabled
     lock = asyncio.Lock()
diff --git a/homeassistant/components/cloud/account_link.py b/homeassistant/components/cloud/account_link.py
index e3b3c1231bb..1423330cb44 100644
--- a/homeassistant/components/cloud/account_link.py
+++ b/homeassistant/components/cloud/account_link.py
@@ -1,5 +1,8 @@
 """Account linking via the cloud."""
+from __future__ import annotations
+
 import asyncio
+from datetime import datetime
 import logging
 from typing import Any
 
@@ -24,14 +27,16 @@ CURRENT_PLAIN_VERSION = AwesomeVersion(
 
 
 @callback
-def async_setup(hass: HomeAssistant):
+def async_setup(hass: HomeAssistant) -> None:
     """Set up cloud account link."""
     config_entry_oauth2_flow.async_add_implementation_provider(
         hass, DOMAIN, async_provide_implementation
     )
 
 
-async def async_provide_implementation(hass: HomeAssistant, domain: str):
+async def async_provide_implementation(
+    hass: HomeAssistant, domain: str
+) -> list[config_entry_oauth2_flow.AbstractOAuth2Implementation]:
     """Provide an implementation for a domain."""
     services = await _get_services(hass)
 
@@ -55,9 +60,11 @@ async def async_provide_implementation(hass: HomeAssistant, domain: str):
     return []
 
 
-async def _get_services(hass):
+async def _get_services(hass: HomeAssistant) -> list[dict[str, Any]]:
     """Get the available services."""
-    if (services := hass.data.get(DATA_SERVICES)) is not None:
+    services: list[dict[str, Any]]
+    if DATA_SERVICES in hass.data:
+        services = hass.data[DATA_SERVICES]
         return services
 
     try:
@@ -68,7 +75,7 @@ async def _get_services(hass):
     hass.data[DATA_SERVICES] = services
 
     @callback
-    def clear_services(_now):
+    def clear_services(_now: datetime) -> None:
         """Clear services cache."""
         hass.data.pop(DATA_SERVICES, None)
 
@@ -102,7 +109,7 @@ class CloudOAuth2Implementation(config_entry_oauth2_flow.AbstractOAuth2Implement
         )
         authorize_url = await helper.async_get_authorize_url()
 
-        async def await_tokens():
+        async def await_tokens() -> None:
             """Wait for tokens and pass them on when received."""
             try:
                 tokens = await helper.async_get_tokens()
@@ -125,7 +132,8 @@ class CloudOAuth2Implementation(config_entry_oauth2_flow.AbstractOAuth2Implement
     async def async_resolve_external_data(self, external_data: Any) -> dict:
         """Resolve external data to tokens."""
         # We already passed in tokens
-        return external_data
+        dict_data: dict = external_data
+        return dict_data
 
     async def _async_refresh_token(self, token: dict) -> dict:
         """Refresh a token."""
diff --git a/homeassistant/components/cloud/alexa_config.py b/homeassistant/components/cloud/alexa_config.py
index 53bf44d8aa1..052fddabb54 100644
--- a/homeassistant/components/cloud/alexa_config.py
+++ b/homeassistant/components/cloud/alexa_config.py
@@ -4,9 +4,10 @@ from __future__ import annotations
 import asyncio
 from collections.abc import Callable
 from contextlib import suppress
-from datetime import timedelta
+from datetime import datetime, timedelta
 from http import HTTPStatus
 import logging
+from typing import TYPE_CHECKING, Any
 
 import aiohttp
 import async_timeout
@@ -29,10 +30,11 @@ from homeassistant.components.homeassistant.exposed_entities import (
 )
 from homeassistant.components.sensor import SensorDeviceClass
 from homeassistant.const import CLOUD_NEVER_EXPOSED_ENTITIES
-from homeassistant.core import HomeAssistant, callback, split_entity_id
+from homeassistant.core import Event, HomeAssistant, callback, split_entity_id
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import entity_registry as er, start
 from homeassistant.helpers.entity import get_device_class
+from homeassistant.helpers.entityfilter import EntityFilter
 from homeassistant.helpers.event import async_call_later
 from homeassistant.setup import async_setup_component
 from homeassistant.util.dt import utcnow
@@ -47,6 +49,9 @@ from .const import (
 )
 from .prefs import ALEXA_SETTINGS_VERSION, CloudPreferences
 
+if TYPE_CHECKING:
+    from .client import CloudClient
+
 _LOGGER = logging.getLogger(__name__)
 
 CLOUD_ALEXA = f"{CLOUD_DOMAIN}.{ALEXA_DOMAIN}"
@@ -132,7 +137,7 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
         config: dict,
         cloud_user: str,
         prefs: CloudPreferences,
-        cloud: Cloud,
+        cloud: Cloud[CloudClient],
     ) -> None:
         """Initialize the Alexa config."""
         super().__init__(hass)
@@ -141,13 +146,13 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
         self._prefs = prefs
         self._cloud = cloud
         self._token = None
-        self._token_valid = None
+        self._token_valid: datetime | None = None
         self._cur_entity_prefs = async_get_assistant_settings(hass, CLOUD_ALEXA)
         self._alexa_sync_unsub: Callable[[], None] | None = None
-        self._endpoint = None
+        self._endpoint: Any = None
 
     @property
-    def enabled(self):
+    def enabled(self) -> bool:
         """Return if Alexa is enabled."""
         return (
             self._cloud.is_logged_in
@@ -156,12 +161,12 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
         )
 
     @property
-    def supports_auth(self):
+    def supports_auth(self) -> bool:
         """Return if config supports auth."""
         return True
 
     @property
-    def should_report_state(self):
+    def should_report_state(self) -> bool:
         """Return if states should be proactively reported."""
         return (
             self._prefs.alexa_enabled
@@ -170,7 +175,7 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
         )
 
     @property
-    def endpoint(self):
+    def endpoint(self) -> Any | None:
         """Endpoint for report state."""
         if self._endpoint is None:
             raise ValueError("No endpoint available. Fetch access token first")
@@ -178,22 +183,22 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
         return self._endpoint
 
     @property
-    def locale(self):
+    def locale(self) -> str:
         """Return config locale."""
         # Not clear how to determine locale atm.
         return "en-US"
 
     @property
-    def entity_config(self):
+    def entity_config(self) -> dict[str, Any]:
         """Return entity config."""
         return self._config.get(CONF_ENTITY_CONFIG) or {}
 
     @callback
-    def user_identifier(self):
+    def user_identifier(self) -> str:
         """Return an identifier for the user that represents this config."""
         return self._cloud_user
 
-    def _migrate_alexa_entity_settings_v1(self):
+    def _migrate_alexa_entity_settings_v1(self) -> None:
         """Migrate alexa entity settings to entity registry options."""
         if not self._config[CONF_FILTER].empty_filter:
             # Don't migrate if there's a YAML config
@@ -210,11 +215,11 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
                 self._should_expose_legacy(entity_id),
             )
 
-    async def async_initialize(self):
+    async def async_initialize(self) -> None:
         """Initialize the Alexa config."""
         await super().async_initialize()
 
-        async def on_hass_started(hass):
+        async def on_hass_started(hass: HomeAssistant) -> None:
             if self._prefs.alexa_settings_version != ALEXA_SETTINGS_VERSION:
                 if self._prefs.alexa_settings_version < 2 or (
                     # Recover from a bug we had in 2023.5.0 where entities didn't get exposed
@@ -235,7 +240,7 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
                 self.hass, CLOUD_ALEXA, self._async_exposed_entities_updated
             )
 
-        async def on_hass_start(hass):
+        async def on_hass_start(hass: HomeAssistant) -> None:
             if self.enabled and ALEXA_DOMAIN not in self.hass.config.components:
                 await async_setup_component(self.hass, ALEXA_DOMAIN, {})
 
@@ -248,14 +253,14 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
             self._handle_entity_registry_updated,
         )
 
-    def _should_expose_legacy(self, entity_id):
+    def _should_expose_legacy(self, entity_id: str) -> bool:
         """If an entity should be exposed."""
         if entity_id in CLOUD_NEVER_EXPOSED_ENTITIES:
             return False
 
         entity_configs = self._prefs.alexa_entity_configs
         entity_config = entity_configs.get(entity_id, {})
-        entity_expose = entity_config.get(PREF_SHOULD_EXPOSE)
+        entity_expose: bool | None = entity_config.get(PREF_SHOULD_EXPOSE)
         if entity_expose is not None:
             return entity_expose
 
@@ -279,21 +284,22 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
         )
 
     @callback
-    def should_expose(self, entity_id):
+    def should_expose(self, entity_id: str) -> bool:
         """If an entity should be exposed."""
-        if not self._config[CONF_FILTER].empty_filter:
+        entity_filter: EntityFilter = self._config[CONF_FILTER]
+        if not entity_filter.empty_filter:
             if entity_id in CLOUD_NEVER_EXPOSED_ENTITIES:
                 return False
-            return self._config[CONF_FILTER](entity_id)
+            return entity_filter(entity_id)
 
         return async_should_expose(self.hass, CLOUD_ALEXA, entity_id)
 
     @callback
-    def async_invalidate_access_token(self):
+    def async_invalidate_access_token(self) -> None:
         """Invalidate access token."""
         self._token_valid = None
 
-    async def async_get_access_token(self):
+    async def async_get_access_token(self) -> Any:
         """Get an access token."""
         if self._token_valid is not None and self._token_valid > utcnow():
             return self._token
@@ -380,7 +386,7 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
             self.hass, SYNC_DELAY, self._sync_prefs
         )
 
-    async def _sync_prefs(self, _now):
+    async def _sync_prefs(self, _now: datetime) -> None:
         """Sync the updated preferences to Alexa."""
         self._alexa_sync_unsub = None
         old_prefs = self._cur_entity_prefs
@@ -432,7 +438,7 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
         if await self._sync_helper(to_update, to_remove):
             self._cur_entity_prefs = new_prefs
 
-    async def async_sync_entities(self):
+    async def async_sync_entities(self) -> bool:
         """Sync all entities to Alexa."""
         # Remove any pending sync
         if self._alexa_sync_unsub:
@@ -452,7 +458,7 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
 
         return await self._sync_helper(to_update, to_remove)
 
-    async def _sync_helper(self, to_update, to_remove) -> bool:
+    async def _sync_helper(self, to_update: list[str], to_remove: list[str]) -> bool:
         """Sync entities to Alexa.
 
         Return boolean if it was successful.
@@ -497,7 +503,7 @@ class CloudAlexaConfig(alexa_config.AbstractConfig):
             _LOGGER.warning("Error trying to sync entities to Alexa: %s", err)
             return False
 
-    async def _handle_entity_registry_updated(self, event):
+    async def _handle_entity_registry_updated(self, event: Event) -> None:
         """Handle when entity registry updated."""
         if not self.enabled or not self._cloud.is_logged_in:
             return
diff --git a/homeassistant/components/cloud/binary_sensor.py b/homeassistant/components/cloud/binary_sensor.py
index 2d78ad8b512..e09122ac7bf 100644
--- a/homeassistant/components/cloud/binary_sensor.py
+++ b/homeassistant/components/cloud/binary_sensor.py
@@ -2,6 +2,10 @@
 from __future__ import annotations
 
 import asyncio
+from collections.abc import Callable
+from typing import Any
+
+from hass_nabucasa import Cloud
 
 from homeassistant.components.binary_sensor import (
     BinarySensorDeviceClass,
@@ -13,6 +17,7 @@ from homeassistant.helpers.dispatcher import async_dispatcher_connect
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 
+from .client import CloudClient
 from .const import DISPATCHER_REMOTE_UPDATE, DOMAIN
 
 WAIT_UNTIL_CHANGE = 3
@@ -41,10 +46,10 @@ class CloudRemoteBinary(BinarySensorEntity):
     _attr_unique_id = "cloud-remote-ui-connectivity"
     _attr_entity_category = EntityCategory.DIAGNOSTIC
 
-    def __init__(self, cloud):
+    def __init__(self, cloud: Cloud[CloudClient]) -> None:
         """Initialize the binary sensor."""
         self.cloud = cloud
-        self._unsub_dispatcher = None
+        self._unsub_dispatcher: Callable[[], None] | None = None
 
     @property
     def is_on(self) -> bool:
@@ -59,7 +64,7 @@ class CloudRemoteBinary(BinarySensorEntity):
     async def async_added_to_hass(self) -> None:
         """Register update dispatcher."""
 
-        async def async_state_update(data):
+        async def async_state_update(data: Any) -> None:
             """Update callback."""
             await asyncio.sleep(WAIT_UNTIL_CHANGE)
             self.async_write_ha_state()
diff --git a/homeassistant/components/cloud/client.py b/homeassistant/components/cloud/client.py
index f3878fd68af..dff3bdcdbdd 100644
--- a/homeassistant/components/cloud/client.py
+++ b/homeassistant/components/cloud/client.py
@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import asyncio
+from datetime import datetime
 from http import HTTPStatus
 import logging
 from pathlib import Path
@@ -95,7 +96,9 @@ class CloudClient(Interface):
         if self._alexa_config is None:
             async with self._alexa_config_init_lock:
                 if self._alexa_config is not None:
-                    return self._alexa_config
+                    # This is reachable if the config was set while we waited
+                    # for the lock
+                    return self._alexa_config  # type: ignore[unreachable]
 
                 cloud_user = await self._prefs.get_cloud_user()
 
@@ -136,7 +139,7 @@ class CloudClient(Interface):
         """When cloud is connected."""
         is_new_user = await self.prefs.async_set_username(self.cloud.username)
 
-        async def enable_alexa(_):
+        async def enable_alexa(_: Any) -> None:
             """Enable Alexa."""
             aconf = await self.get_alexa_config()
             try:
@@ -156,7 +159,7 @@ class CloudClient(Interface):
 
         enable_alexa_job = HassJob(enable_alexa, cancel_on_shutdown=True)
 
-        async def enable_google(_):
+        async def enable_google(_: datetime) -> None:
             """Enable Google."""
             gconf = await self.get_google_config()
 
@@ -210,7 +213,7 @@ class CloudClient(Interface):
         """Process cloud alexa message to client."""
         cloud_user = await self._prefs.get_cloud_user()
         aconfig = await self.get_alexa_config()
-        return await alexa_smart_home.async_handle_message(
+        return await alexa_smart_home.async_handle_message(  # type: ignore[no-any-return, no-untyped-call]
             self._hass,
             aconfig,
             payload,
@@ -223,9 +226,11 @@ class CloudClient(Interface):
         gconf = await self.get_google_config()
 
         if not self._prefs.google_enabled:
-            return ga.api_disabled_response(payload, gconf.agent_user_id)
+            return ga.api_disabled_response(  # type: ignore[no-any-return, no-untyped-call]
+                payload, gconf.agent_user_id
+            )
 
-        return await ga.async_handle_message(
+        return await ga.async_handle_message(  # type: ignore[no-any-return, no-untyped-call]
             self._hass, gconf, gconf.cloud_user, payload, google_assistant.SOURCE_CLOUD
         )
 
diff --git a/homeassistant/components/cloud/google_config.py b/homeassistant/components/cloud/google_config.py
index 351de5d0e65..8592a4ffbe3 100644
--- a/homeassistant/components/cloud/google_config.py
+++ b/homeassistant/components/cloud/google_config.py
@@ -1,8 +1,10 @@
 """Google config for Cloud."""
+from __future__ import annotations
+
 import asyncio
 from http import HTTPStatus
 import logging
-from typing import Any
+from typing import TYPE_CHECKING, Any
 
 from hass_nabucasa import Cloud, cloud_api
 from hass_nabucasa.google_report_state import ErrorResponse
@@ -24,12 +26,14 @@ from homeassistant.core import (
     CoreState,
     Event,
     HomeAssistant,
+    State,
     callback,
     split_entity_id,
 )
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import device_registry as dr, entity_registry as er, start
 from homeassistant.helpers.entity import get_device_class
+from homeassistant.helpers.entityfilter import EntityFilter
 from homeassistant.setup import async_setup_component
 
 from .const import (
@@ -42,6 +46,9 @@ from .const import (
 )
 from .prefs import GOOGLE_SETTINGS_VERSION, CloudPreferences
 
+if TYPE_CHECKING:
+    from .client import CloudClient
+
 _LOGGER = logging.getLogger(__name__)
 
 CLOUD_GOOGLE = f"{CLOUD_DOMAIN}.{GOOGLE_DOMAIN}"
@@ -123,7 +130,7 @@ class CloudGoogleConfig(AbstractConfig):
         config: dict[str, Any],
         cloud_user: str,
         prefs: CloudPreferences,
-        cloud: Cloud,
+        cloud: Cloud[CloudClient],
     ) -> None:
         """Initialize the Google config."""
         super().__init__(hass)
@@ -134,7 +141,7 @@ class CloudGoogleConfig(AbstractConfig):
         self._sync_entities_lock = asyncio.Lock()
 
     @property
-    def enabled(self):
+    def enabled(self) -> bool:
         """Return if Google is enabled."""
         return (
             self._cloud.is_logged_in
@@ -143,34 +150,34 @@ class CloudGoogleConfig(AbstractConfig):
         )
 
     @property
-    def entity_config(self):
+    def entity_config(self) -> dict[str, Any]:
         """Return entity config."""
         return self._config.get(CONF_ENTITY_CONFIG) or {}
 
     @property
-    def secure_devices_pin(self):
+    def secure_devices_pin(self) -> str | None:
         """Return entity config."""
         return self._prefs.google_secure_devices_pin
 
     @property
-    def should_report_state(self):
+    def should_report_state(self) -> bool:
         """Return if states should be proactively reported."""
         return self.enabled and self._prefs.google_report_state
 
-    def get_local_webhook_id(self, agent_user_id):
+    def get_local_webhook_id(self, agent_user_id: Any) -> str:
         """Return the webhook ID to be used for actions for a given agent user id via the local SDK."""
         return self._prefs.google_local_webhook_id
 
-    def get_local_agent_user_id(self, webhook_id):
+    def get_local_agent_user_id(self, webhook_id: Any) -> str:
         """Return the user ID to be used for actions received via the local SDK."""
         return self._user
 
     @property
-    def cloud_user(self):
+    def cloud_user(self) -> str:
         """Return Cloud User account."""
         return self._user
 
-    def _migrate_google_entity_settings_v1(self):
+    def _migrate_google_entity_settings_v1(self) -> None:
         """Migrate Google entity settings to entity registry options."""
         if not self._config[CONF_FILTER].empty_filter:
             # Don't migrate if there's a YAML config
@@ -195,7 +202,7 @@ class CloudGoogleConfig(AbstractConfig):
                     _2fa_disabled,
                 )
 
-    async def async_initialize(self):
+    async def async_initialize(self) -> None:
         """Perform async initialization of config."""
         await super().async_initialize()
 
@@ -246,18 +253,18 @@ class CloudGoogleConfig(AbstractConfig):
             self._handle_device_registry_updated,
         )
 
-    def should_expose(self, state):
+    def should_expose(self, state: State) -> bool:
         """If a state object should be exposed."""
         return self._should_expose_entity_id(state.entity_id)
 
-    def _should_expose_legacy(self, entity_id):
+    def _should_expose_legacy(self, entity_id: str) -> bool:
         """If an entity ID should be exposed."""
         if entity_id in CLOUD_NEVER_EXPOSED_ENTITIES:
             return False
 
         entity_configs = self._prefs.google_entity_configs
         entity_config = entity_configs.get(entity_id, {})
-        entity_expose = entity_config.get(PREF_SHOULD_EXPOSE)
+        entity_expose: bool | None = entity_config.get(PREF_SHOULD_EXPOSE)
         if entity_expose is not None:
             return entity_expose
 
@@ -282,36 +289,37 @@ class CloudGoogleConfig(AbstractConfig):
             and _supported_legacy(self.hass, entity_id)
         )
 
-    def _should_expose_entity_id(self, entity_id):
+    def _should_expose_entity_id(self, entity_id: str) -> bool:
         """If an entity should be exposed."""
-        if not self._config[CONF_FILTER].empty_filter:
+        entity_filter: EntityFilter = self._config[CONF_FILTER]
+        if not entity_filter.empty_filter:
             if entity_id in CLOUD_NEVER_EXPOSED_ENTITIES:
                 return False
-            return self._config[CONF_FILTER](entity_id)
+            return entity_filter(entity_id)
 
         return async_should_expose(self.hass, CLOUD_GOOGLE, entity_id)
 
     @property
-    def agent_user_id(self):
+    def agent_user_id(self) -> str:
         """Return Agent User Id to use for query responses."""
         return self._cloud.username
 
     @property
-    def has_registered_user_agent(self):
+    def has_registered_user_agent(self) -> bool:
         """Return if we have a Agent User Id registered."""
         return len(self._store.agent_user_ids) > 0
 
-    def get_agent_user_id(self, context):
+    def get_agent_user_id(self, context: Any) -> str:
         """Get agent user ID making request."""
         return self.agent_user_id
 
-    def _2fa_disabled_legacy(self, entity_id):
+    def _2fa_disabled_legacy(self, entity_id: str) -> bool | None:
         """If an entity should be checked for 2FA."""
         entity_configs = self._prefs.google_entity_configs
         entity_config = entity_configs.get(entity_id, {})
         return entity_config.get(PREF_DISABLE_2FA)
 
-    def should_2fa(self, state):
+    def should_2fa(self, state: State) -> bool:
         """If an entity should be checked for 2FA."""
         try:
             settings = async_get_entity_settings(self.hass, state.entity_id)
@@ -322,14 +330,14 @@ class CloudGoogleConfig(AbstractConfig):
         assistant_options = settings.get(CLOUD_GOOGLE, {})
         return not assistant_options.get(PREF_DISABLE_2FA, DEFAULT_DISABLE_2FA)
 
-    async def async_report_state(self, message, agent_user_id: str):
+    async def async_report_state(self, message: Any, agent_user_id: str) -> None:
         """Send a state report to Google."""
         try:
             await self._cloud.google_report_state.async_send_message(message)
         except ErrorResponse as err:
             _LOGGER.warning("Error reporting state - %s: %s", err.code, err.message)
 
-    async def _async_request_sync_devices(self, agent_user_id: str):
+    async def _async_request_sync_devices(self, agent_user_id: str) -> int:
         """Trigger a sync with Google."""
         if self._sync_entities_lock.locked():
             return HTTPStatus.OK
@@ -338,7 +346,7 @@ class CloudGoogleConfig(AbstractConfig):
             resp = await cloud_api.async_google_actions_request_sync(self._cloud)
             return resp.status
 
-    async def _async_prefs_updated(self, prefs):
+    async def _async_prefs_updated(self, prefs: CloudPreferences) -> None:
         """Handle updated preferences."""
         if not self._cloud.is_logged_in:
             if self.is_reporting_state:
diff --git a/homeassistant/components/cloud/http_api.py b/homeassistant/components/cloud/http_api.py
index f5d5c98fe1a..84c348236d4 100644
--- a/homeassistant/components/cloud/http_api.py
+++ b/homeassistant/components/cloud/http_api.py
@@ -1,14 +1,15 @@
 """The HTTP api to control the cloud integration."""
 import asyncio
-from collections.abc import Mapping
+from collections.abc import Awaitable, Callable, Coroutine, Mapping
 from contextlib import suppress
 import dataclasses
 from functools import wraps
 from http import HTTPStatus
 import logging
-from typing import Any
+from typing import Any, Concatenate, ParamSpec, TypeVar
 
 import aiohttp
+from aiohttp import web
 import async_timeout
 import attr
 from hass_nabucasa import Cloud, auth, thingtalk
@@ -32,6 +33,7 @@ from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.util.location import async_detect_location_info
 
 from .alexa_config import entity_supported as entity_supported_by_alexa
+from .client import CloudClient
 from .const import (
     DOMAIN,
     PREF_ALEXA_REPORT_STATE,
@@ -50,7 +52,7 @@ from .subscription import async_subscription_info
 _LOGGER = logging.getLogger(__name__)
 
 
-_CLOUD_ERRORS = {
+_CLOUD_ERRORS: dict[type[Exception], tuple[HTTPStatus, str]] = {
     asyncio.TimeoutError: (
         HTTPStatus.BAD_GATEWAY,
         "Unable to reach the Home Assistant cloud.",
@@ -62,7 +64,7 @@ _CLOUD_ERRORS = {
 }
 
 
-async def async_setup(hass):
+async def async_setup(hass: HomeAssistant) -> None:
     """Initialize the HTTP API."""
     websocket_api.async_register_command(hass, websocket_cloud_status)
     websocket_api.async_register_command(hass, websocket_subscription)
@@ -107,11 +109,21 @@ async def async_setup(hass):
     )
 
 
-def _handle_cloud_errors(handler):
+_HassViewT = TypeVar("_HassViewT", bound=HomeAssistantView)
+_P = ParamSpec("_P")
+
+
+def _handle_cloud_errors(
+    handler: Callable[Concatenate[_HassViewT, web.Request, _P], Awaitable[web.Response]]
+) -> Callable[
+    Concatenate[_HassViewT, web.Request, _P], Coroutine[Any, Any, web.Response]
+]:
     """Webview decorator to handle auth errors."""
 
     @wraps(handler)
-    async def error_handler(view, request, *args, **kwargs):
+    async def error_handler(
+        view: _HassViewT, request: web.Request, *args: _P.args, **kwargs: _P.kwargs
+    ) -> web.Response:
         """Handle exceptions that raise from the wrapped request handler."""
         try:
             result = await handler(view, request, *args, **kwargs)
@@ -126,25 +138,37 @@ def _handle_cloud_errors(handler):
     return error_handler
 
 
-def _ws_handle_cloud_errors(handler):
+def _ws_handle_cloud_errors(
+    handler: Callable[
+        [HomeAssistant, websocket_api.ActiveConnection, dict[str, Any]],
+        Coroutine[None, None, None],
+    ]
+) -> Callable[
+    [HomeAssistant, websocket_api.ActiveConnection, dict[str, Any]],
+    Coroutine[None, None, None],
+]:
     """Websocket decorator to handle auth errors."""
 
     @wraps(handler)
-    async def error_handler(hass, connection, msg):
+    async def error_handler(
+        hass: HomeAssistant,
+        connection: websocket_api.ActiveConnection,
+        msg: dict[str, Any],
+    ) -> None:
         """Handle exceptions that raise from the wrapped handler."""
         try:
             return await handler(hass, connection, msg)
 
         except Exception as err:  # pylint: disable=broad-except
             err_status, err_msg = _process_cloud_exception(err, msg["type"])
-            connection.send_error(msg["id"], err_status, err_msg)
+            connection.send_error(msg["id"], str(err_status), err_msg)
 
     return error_handler
 
 
-def _process_cloud_exception(exc, where):
+def _process_cloud_exception(exc: Exception, where: str) -> tuple[HTTPStatus, str]:
     """Process a cloud exception."""
-    err_info = None
+    err_info: tuple[HTTPStatus, str] | None = None
 
     for err, value_info in _CLOUD_ERRORS.items():
         if isinstance(exc, err):
@@ -165,10 +189,10 @@ class GoogleActionsSyncView(HomeAssistantView):
     name = "api:cloud:google_actions/sync"
 
     @_handle_cloud_errors
-    async def post(self, request):
+    async def post(self, request: web.Request) -> web.Response:
         """Trigger a Google Actions sync."""
         hass = request.app["hass"]
-        cloud: Cloud = hass.data[DOMAIN]
+        cloud: Cloud[CloudClient] = hass.data[DOMAIN]
         gconf = await cloud.client.get_google_config()
         status = await gconf.async_sync_entities(gconf.agent_user_id)
         return self.json({}, status_code=status)
@@ -184,7 +208,7 @@ class CloudLoginView(HomeAssistantView):
     @RequestDataValidator(
         vol.Schema({vol.Required("email"): str, vol.Required("password"): str})
     )
-    async def post(self, request, data):
+    async def post(self, request: web.Request, data: dict[str, Any]) -> web.Response:
         """Handle login request."""
 
         def cloud_assist_pipeline(hass: HomeAssistant) -> str | None:
@@ -221,7 +245,7 @@ class CloudLogoutView(HomeAssistantView):
     name = "api:cloud:logout"
 
     @_handle_cloud_errors
-    async def post(self, request):
+    async def post(self, request: web.Request) -> web.Response:
         """Handle logout request."""
         hass = request.app["hass"]
         cloud = hass.data[DOMAIN]
@@ -247,7 +271,7 @@ class CloudRegisterView(HomeAssistantView):
             }
         )
     )
-    async def post(self, request, data):
+    async def post(self, request: web.Request, data: dict[str, Any]) -> web.Response:
         """Handle registration request."""
         hass = request.app["hass"]
         cloud = hass.data[DOMAIN]
@@ -283,7 +307,7 @@ class CloudResendConfirmView(HomeAssistantView):
 
     @_handle_cloud_errors
     @RequestDataValidator(vol.Schema({vol.Required("email"): str}))
-    async def post(self, request, data):
+    async def post(self, request: web.Request, data: dict[str, Any]) -> web.Response:
         """Handle resending confirm email code request."""
         hass = request.app["hass"]
         cloud = hass.data[DOMAIN]
@@ -302,7 +326,7 @@ class CloudForgotPasswordView(HomeAssistantView):
 
     @_handle_cloud_errors
     @RequestDataValidator(vol.Schema({vol.Required("email"): str}))
-    async def post(self, request, data):
+    async def post(self, request: web.Request, data: dict[str, Any]) -> web.Response:
         """Handle forgot password request."""
         hass = request.app["hass"]
         cloud = hass.data[DOMAIN]
@@ -330,11 +354,20 @@ async def websocket_cloud_status(
     )
 
 
-def _require_cloud_login(handler):
+def _require_cloud_login(
+    handler: Callable[
+        [HomeAssistant, websocket_api.ActiveConnection, dict[str, Any]],
+        None,
+    ]
+) -> Callable[[HomeAssistant, websocket_api.ActiveConnection, dict[str, Any]], None,]:
     """Websocket decorator that requires cloud to be logged in."""
 
     @wraps(handler)
-    def with_cloud_auth(hass, connection, msg):
+    def with_cloud_auth(
+        hass: HomeAssistant,
+        connection: websocket_api.ActiveConnection,
+        msg: dict[str, Any],
+    ) -> None:
         """Require to be logged into the cloud."""
         cloud = hass.data[DOMAIN]
         if not cloud.is_logged_in:
@@ -467,7 +500,9 @@ async def websocket_hook_delete(
     connection.send_message(websocket_api.result_message(msg["id"]))
 
 
-async def _account_data(hass: HomeAssistant, cloud: Cloud):
+async def _account_data(
+    hass: HomeAssistant, cloud: Cloud[CloudClient]
+) -> dict[str, Any]:
     """Generate the auth data JSON response."""
 
     assert hass.config.api
diff --git a/homeassistant/components/cloud/prefs.py b/homeassistant/components/cloud/prefs.py
index 5ccc007e524..46ddafd48e7 100644
--- a/homeassistant/components/cloud/prefs.py
+++ b/homeassistant/components/cloud/prefs.py
@@ -1,14 +1,15 @@
 """Preference management for cloud."""
 from __future__ import annotations
 
+from collections.abc import Callable, Coroutine
 from typing import Any
 
 from homeassistant.auth.const import GROUP_ID_ADMIN
 from homeassistant.auth.models import User
 from homeassistant.components import webhook
-from homeassistant.core import callback
+from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.storage import Store
-from homeassistant.helpers.typing import UNDEFINED
+from homeassistant.helpers.typing import UNDEFINED, UndefinedType
 from homeassistant.util.logging import async_create_catching_coro
 
 from .const import (
@@ -63,17 +64,20 @@ class CloudPreferencesStore(Store):
 class CloudPreferences:
     """Handle cloud preferences."""
 
-    def __init__(self, hass):
+    _prefs: dict[str, Any]
+
+    def __init__(self, hass: HomeAssistant) -> None:
         """Initialize cloud prefs."""
         self._hass = hass
         self._store = CloudPreferencesStore(
             hass, STORAGE_VERSION, STORAGE_KEY, minor_version=STORAGE_VERSION_MINOR
         )
-        self._prefs = None
-        self._listeners = []
+        self._listeners: list[
+            Callable[[CloudPreferences], Coroutine[Any, Any, None]]
+        ] = []
         self.last_updated: set[str] = set()
 
-    async def async_initialize(self):
+    async def async_initialize(self) -> None:
         """Finish initializing the preferences."""
         if (prefs := await self._store.async_load()) is None:
             prefs = self._empty_config("")
@@ -89,26 +93,28 @@ class CloudPreferences:
             )
 
     @callback
-    def async_listen_updates(self, listener):
+    def async_listen_updates(
+        self, listener: Callable[[CloudPreferences], Coroutine[Any, Any, None]]
+    ) -> None:
         """Listen for updates to the preferences."""
         self._listeners.append(listener)
 
     async def async_update(
         self,
         *,
-        google_enabled=UNDEFINED,
-        alexa_enabled=UNDEFINED,
-        remote_enabled=UNDEFINED,
-        google_secure_devices_pin=UNDEFINED,
-        cloudhooks=UNDEFINED,
-        cloud_user=UNDEFINED,
-        alexa_report_state=UNDEFINED,
-        google_report_state=UNDEFINED,
-        tts_default_voice=UNDEFINED,
-        remote_domain=UNDEFINED,
-        alexa_settings_version=UNDEFINED,
-        google_settings_version=UNDEFINED,
-    ):
+        google_enabled: bool | UndefinedType = UNDEFINED,
+        alexa_enabled: bool | UndefinedType = UNDEFINED,
+        remote_enabled: bool | UndefinedType = UNDEFINED,
+        google_secure_devices_pin: str | None | UndefinedType = UNDEFINED,
+        cloudhooks: dict[str, dict[str, str | bool]] | UndefinedType = UNDEFINED,
+        cloud_user: str | UndefinedType = UNDEFINED,
+        alexa_report_state: bool | UndefinedType = UNDEFINED,
+        google_report_state: bool | UndefinedType = UNDEFINED,
+        tts_default_voice: tuple[str, str] | UndefinedType = UNDEFINED,
+        remote_domain: str | None | UndefinedType = UNDEFINED,
+        alexa_settings_version: int | UndefinedType = UNDEFINED,
+        google_settings_version: int | UndefinedType = UNDEFINED,
+    ) -> None:
         """Update user preferences."""
         prefs = {**self._prefs}
 
@@ -131,7 +137,7 @@ class CloudPreferences:
 
         await self._save_prefs(prefs)
 
-    async def async_set_username(self, username) -> bool:
+    async def async_set_username(self, username: str | None) -> bool:
         """Set the username that is logged in."""
         # Logging out.
         if username is None:
@@ -154,7 +160,7 @@ class CloudPreferences:
 
         return True
 
-    def as_dict(self):
+    def as_dict(self) -> dict[str, Any]:
         """Return dictionary version."""
         return {
             PREF_ALEXA_DEFAULT_EXPOSE: self.alexa_default_expose,
@@ -170,7 +176,7 @@ class CloudPreferences:
         }
 
     @property
-    def remote_enabled(self):
+    def remote_enabled(self) -> bool:
         """Return if remote is enabled on start."""
         if not self._prefs.get(PREF_ENABLE_REMOTE, False):
             return False
@@ -178,17 +184,18 @@ class CloudPreferences:
         return True
 
     @property
-    def remote_domain(self):
+    def remote_domain(self) -> str | None:
         """Return remote domain."""
         return self._prefs.get(PREF_REMOTE_DOMAIN)
 
     @property
-    def alexa_enabled(self):
+    def alexa_enabled(self) -> bool:
         """Return if Alexa is enabled."""
-        return self._prefs[PREF_ENABLE_ALEXA]
+        alexa_enabled: bool = self._prefs[PREF_ENABLE_ALEXA]
+        return alexa_enabled
 
     @property
-    def alexa_report_state(self):
+    def alexa_report_state(self) -> bool:
         """Return if Alexa report state is enabled."""
         return self._prefs.get(PREF_ALEXA_REPORT_STATE, DEFAULT_ALEXA_REPORT_STATE)
 
@@ -201,44 +208,48 @@ class CloudPreferences:
         return self._prefs.get(PREF_ALEXA_DEFAULT_EXPOSE)
 
     @property
-    def alexa_entity_configs(self):
+    def alexa_entity_configs(self) -> dict[str, Any]:
         """Return Alexa Entity configurations."""
         return self._prefs.get(PREF_ALEXA_ENTITY_CONFIGS, {})
 
     @property
-    def alexa_settings_version(self):
+    def alexa_settings_version(self) -> int:
         """Return version of Alexa settings."""
-        return self._prefs[PREF_ALEXA_SETTINGS_VERSION]
+        alexa_settings_version: int = self._prefs[PREF_ALEXA_SETTINGS_VERSION]
+        return alexa_settings_version
 
     @property
-    def google_enabled(self):
+    def google_enabled(self) -> bool:
         """Return if Google is enabled."""
-        return self._prefs[PREF_ENABLE_GOOGLE]
+        google_enabled: bool = self._prefs[PREF_ENABLE_GOOGLE]
+        return google_enabled
 
     @property
-    def google_report_state(self):
+    def google_report_state(self) -> bool:
         """Return if Google report state is enabled."""
         return self._prefs.get(PREF_GOOGLE_REPORT_STATE, DEFAULT_GOOGLE_REPORT_STATE)
 
     @property
-    def google_secure_devices_pin(self):
+    def google_secure_devices_pin(self) -> str | None:
         """Return if Google is allowed to unlock locks."""
         return self._prefs.get(PREF_GOOGLE_SECURE_DEVICES_PIN)
 
     @property
-    def google_entity_configs(self):
+    def google_entity_configs(self) -> dict[str, dict[str, Any]]:
         """Return Google Entity configurations."""
         return self._prefs.get(PREF_GOOGLE_ENTITY_CONFIGS, {})
 
     @property
-    def google_settings_version(self):
+    def google_settings_version(self) -> int:
         """Return version of Google settings."""
-        return self._prefs[PREF_GOOGLE_SETTINGS_VERSION]
+        google_settings_version: int = self._prefs[PREF_GOOGLE_SETTINGS_VERSION]
+        return google_settings_version
 
     @property
-    def google_local_webhook_id(self):
+    def google_local_webhook_id(self) -> str:
         """Return Google webhook ID to receive local messages."""
-        return self._prefs[PREF_GOOGLE_LOCAL_WEBHOOK_ID]
+        google_local_webhook_id: str = self._prefs[PREF_GOOGLE_LOCAL_WEBHOOK_ID]
+        return google_local_webhook_id
 
     @property
     def google_default_expose(self) -> list[str] | None:
@@ -249,12 +260,12 @@ class CloudPreferences:
         return self._prefs.get(PREF_GOOGLE_DEFAULT_EXPOSE)
 
     @property
-    def cloudhooks(self):
+    def cloudhooks(self) -> dict[str, Any]:
         """Return the published cloud webhooks."""
         return self._prefs.get(PREF_CLOUDHOOKS, {})
 
     @property
-    def tts_default_voice(self):
+    def tts_default_voice(self) -> tuple[str, str]:
         """Return the default TTS voice."""
         return self._prefs.get(PREF_TTS_DEFAULT_VOICE, DEFAULT_TTS_DEFAULT_VOICE)
 
@@ -281,7 +292,7 @@ class CloudPreferences:
         # an image was restored without restoring the cloud prefs.
         return await self._hass.auth.async_get_user(user_id)
 
-    async def _save_prefs(self, prefs):
+    async def _save_prefs(self, prefs: dict[str, Any]) -> None:
         """Save preferences to disk."""
         self.last_updated = {
             key for key, value in prefs.items() if value != self._prefs.get(key)
@@ -294,7 +305,7 @@ class CloudPreferences:
 
     @callback
     @staticmethod
-    def _empty_config(username):
+    def _empty_config(username: str) -> dict[str, Any]:
         """Return an empty config."""
         return {
             PREF_ALEXA_DEFAULT_EXPOSE: DEFAULT_EXPOSED_DOMAINS,
diff --git a/homeassistant/components/cloud/repairs.py b/homeassistant/components/cloud/repairs.py
index 0864d8b48ad..f7368731d92 100644
--- a/homeassistant/components/cloud/repairs.py
+++ b/homeassistant/components/cloud/repairs.py
@@ -12,6 +12,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.data_entry_flow import FlowResult
 from homeassistant.helpers import issue_registry as ir
 
+from .client import CloudClient
 from .const import DOMAIN
 from .subscription import async_migrate_paypal_agreement, async_subscription_info
 
@@ -67,7 +68,7 @@ class LegacySubscriptionRepairFlow(RepairsFlow):
     async def async_step_change_plan(self, _: None = None) -> FlowResult:
         """Wait for the user to authorize the app installation."""
 
-        cloud: Cloud = self.hass.data[DOMAIN]
+        cloud: Cloud[CloudClient] = self.hass.data[DOMAIN]
 
         async def _async_wait_for_plan_change() -> None:
             flow_manager = repairs_flow_manager(self.hass)
diff --git a/homeassistant/components/cloud/stt.py b/homeassistant/components/cloud/stt.py
index 84e1e088d47..7b6da8b7403 100644
--- a/homeassistant/components/cloud/stt.py
+++ b/homeassistant/components/cloud/stt.py
@@ -18,15 +18,22 @@ from homeassistant.components.stt import (
     SpeechResult,
     SpeechResultState,
 )
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 
+from .client import CloudClient
 from .const import DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
 
-async def async_get_engine(hass, config, discovery_info=None):
+async def async_get_engine(
+    hass: HomeAssistant,
+    config: ConfigType,
+    discovery_info: DiscoveryInfoType | None = None,
+) -> CloudProvider:
     """Set up Cloud speech component."""
-    cloud: Cloud = hass.data[DOMAIN]
+    cloud: Cloud[CloudClient] = hass.data[DOMAIN]
 
     cloud_provider = CloudProvider(cloud)
     if discovery_info is not None:
@@ -37,7 +44,7 @@ async def async_get_engine(hass, config, discovery_info=None):
 class CloudProvider(Provider):
     """NabuCasa speech API provider."""
 
-    def __init__(self, cloud: Cloud) -> None:
+    def __init__(self, cloud: Cloud[CloudClient]) -> None:
         """Home Assistant NabuCasa Speech to text."""
         self.cloud = cloud
 
diff --git a/homeassistant/components/cloud/subscription.py b/homeassistant/components/cloud/subscription.py
index b85a50b20cd..633f0c95e1b 100644
--- a/homeassistant/components/cloud/subscription.py
+++ b/homeassistant/components/cloud/subscription.py
@@ -9,12 +9,13 @@ from aiohttp.client_exceptions import ClientError
 import async_timeout
 from hass_nabucasa import Cloud, cloud_api
 
+from .client import CloudClient
 from .const import REQUEST_TIMEOUT
 
 _LOGGER = logging.getLogger(__name__)
 
 
-async def async_subscription_info(cloud: Cloud) -> dict[str, Any] | None:
+async def async_subscription_info(cloud: Cloud[CloudClient]) -> dict[str, Any] | None:
     """Fetch the subscription info."""
     try:
         async with async_timeout.timeout(REQUEST_TIMEOUT):
@@ -33,7 +34,9 @@ async def async_subscription_info(cloud: Cloud) -> dict[str, Any] | None:
     return None
 
 
-async def async_migrate_paypal_agreement(cloud: Cloud) -> dict[str, Any] | None:
+async def async_migrate_paypal_agreement(
+    cloud: Cloud[CloudClient],
+) -> dict[str, Any] | None:
     """Migrate a paypal agreement from legacy."""
     try:
         async with async_timeout.timeout(REQUEST_TIMEOUT):
diff --git a/homeassistant/components/cloud/system_health.py b/homeassistant/components/cloud/system_health.py
index 592338144f3..0dfd69344f3 100644
--- a/homeassistant/components/cloud/system_health.py
+++ b/homeassistant/components/cloud/system_health.py
@@ -1,4 +1,6 @@
 """Provide info to system health."""
+from typing import Any
+
 from hass_nabucasa import Cloud
 
 from homeassistant.components import system_health
@@ -16,12 +18,12 @@ def async_register(
     register.async_register_info(system_health_info, "/config/cloud")
 
 
-async def system_health_info(hass):
+async def system_health_info(hass: HomeAssistant) -> dict[str, Any]:
     """Get info for the info page."""
-    cloud: Cloud = hass.data[DOMAIN]
-    client: CloudClient = cloud.client
+    cloud: Cloud[CloudClient] = hass.data[DOMAIN]
+    client = cloud.client
 
-    data = {
+    data: dict[str, Any] = {
         "logged_in": cloud.is_logged_in,
     }
 
diff --git a/homeassistant/components/cloud/tts.py b/homeassistant/components/cloud/tts.py
index fea2ffca987..014b5c75d4c 100644
--- a/homeassistant/components/cloud/tts.py
+++ b/homeassistant/components/cloud/tts.py
@@ -1,6 +1,8 @@
 """Support for the cloud for text to speech service."""
+from __future__ import annotations
 
 import logging
+from typing import Any
 
 from hass_nabucasa import Cloud
 from hass_nabucasa.voice import MAP_VOICE, TTS_VOICES, AudioOutput, VoiceError
@@ -12,11 +14,15 @@ from homeassistant.components.tts import (
     CONF_LANG,
     PLATFORM_SCHEMA,
     Provider,
+    TtsAudioType,
     Voice,
 )
-from homeassistant.core import callback
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 
+from .client import CloudClient
 from .const import DOMAIN
+from .prefs import CloudPreferences
 
 ATTR_GENDER = "gender"
 
@@ -25,7 +31,7 @@ SUPPORT_LANGUAGES = list(TTS_VOICES)
 _LOGGER = logging.getLogger(__name__)
 
 
-def validate_lang(value):
+def validate_lang(value: dict[str, Any]) -> dict[str, Any]:
     """Validate chosen gender or language."""
     if (lang := value.get(CONF_LANG)) is None:
         return value
@@ -52,10 +58,16 @@ PLATFORM_SCHEMA = vol.All(
 )
 
 
-async def async_get_engine(hass, config, discovery_info=None):
+async def async_get_engine(
+    hass: HomeAssistant,
+    config: ConfigType,
+    discovery_info: DiscoveryInfoType | None = None,
+) -> CloudProvider:
     """Set up Cloud speech component."""
-    cloud: Cloud = hass.data[DOMAIN]
+    cloud: Cloud[CloudClient] = hass.data[DOMAIN]
 
+    language: str | None
+    gender: str | None
     if discovery_info is not None:
         language = None
         gender = None
@@ -72,7 +84,9 @@ async def async_get_engine(hass, config, discovery_info=None):
 class CloudProvider(Provider):
     """NabuCasa Cloud speech API provider."""
 
-    def __init__(self, cloud: Cloud, language: str, gender: str) -> None:
+    def __init__(
+        self, cloud: Cloud[CloudClient], language: str | None, gender: str | None
+    ) -> None:
         """Initialize cloud provider."""
         self.cloud = cloud
         self.name = "Cloud"
@@ -85,22 +99,22 @@ class CloudProvider(Provider):
         self._language, self._gender = cloud.client.prefs.tts_default_voice
         cloud.client.prefs.async_listen_updates(self._sync_prefs)
 
-    async def _sync_prefs(self, prefs):
+    async def _sync_prefs(self, prefs: CloudPreferences) -> None:
         """Sync preferences."""
         self._language, self._gender = prefs.tts_default_voice
 
     @property
-    def default_language(self):
+    def default_language(self) -> str | None:
         """Return the default language."""
         return self._language
 
     @property
-    def supported_languages(self):
+    def supported_languages(self) -> list[str]:
         """Return list of supported languages."""
         return SUPPORT_LANGUAGES
 
     @property
-    def supported_options(self):
+    def supported_options(self) -> list[str]:
         """Return list of supported options like voice, emotion."""
         return [ATTR_GENDER, ATTR_VOICE, ATTR_AUDIO_OUTPUT]
 
@@ -112,17 +126,20 @@ class CloudProvider(Provider):
         return [Voice(voice, voice) for voice in voices]
 
     @property
-    def default_options(self):
+    def default_options(self) -> dict[str, Any]:
         """Return a dict include default options."""
         return {
             ATTR_GENDER: self._gender,
             ATTR_AUDIO_OUTPUT: AudioOutput.MP3,
         }
 
-    async def async_get_tts_audio(self, message, language, options=None):
+    async def async_get_tts_audio(
+        self, message: str, language: str, options: dict[str, Any] | None = None
+    ) -> TtsAudioType:
         """Load TTS from NabuCasa Cloud."""
         # Process TTS
         try:
+            assert options is not None
             data = await self.cloud.voice.process_tts(
                 text=message,
                 language=language,
diff --git a/homeassistant/components/google_assistant/helpers.py b/homeassistant/components/google_assistant/helpers.py
index e194242df91..49d130d6656 100644
--- a/homeassistant/components/google_assistant/helpers.py
+++ b/homeassistant/components/google_assistant/helpers.py
@@ -21,7 +21,7 @@ from homeassistant.const import (
     CONF_NAME,
     STATE_UNAVAILABLE,
 )
-from homeassistant.core import Context, HomeAssistant, State, callback
+from homeassistant.core import CALLBACK_TYPE, Context, HomeAssistant, State, callback
 from homeassistant.helpers import (
     area_registry as ar,
     device_registry as dr,
@@ -86,19 +86,19 @@ def _get_registry_entries(
 class AbstractConfig(ABC):
     """Hold the configuration for Google Assistant."""
 
+    _store: GoogleConfigStore
     _unsub_report_state: Callable[[], None] | None = None
 
-    def __init__(self, hass):
+    def __init__(self, hass: HomeAssistant) -> None:
         """Initialize abstract config."""
         self.hass = hass
-        self._store = None
-        self._google_sync_unsub = {}
+        self._google_sync_unsub: dict[str, CALLBACK_TYPE] = {}
         self._local_sdk_active = False
         self._local_last_active: datetime | None = None
         self._local_sdk_version_warn = False
         self.is_supported_cache: dict[str, tuple[int | None, bool]] = {}
 
-    async def async_initialize(self):
+    async def async_initialize(self) -> None:
         """Perform async initialization of config."""
         self._store = GoogleConfigStore(self.hass)
         await self._store.async_initialize()
@@ -195,7 +195,7 @@ class AbstractConfig(ABC):
         await gather(*jobs)
 
     @callback
-    def async_enable_report_state(self):
+    def async_enable_report_state(self) -> None:
         """Enable proactive mode."""
         # Circular dep
         # pylint: disable-next=import-outside-toplevel
@@ -205,7 +205,7 @@ class AbstractConfig(ABC):
             self._unsub_report_state = async_enable_report_state(self.hass, self)
 
     @callback
-    def async_disable_report_state(self):
+    def async_disable_report_state(self) -> None:
         """Disable report state."""
         if self._unsub_report_state is not None:
             self._unsub_report_state()
@@ -220,7 +220,7 @@ class AbstractConfig(ABC):
             await self.async_disconnect_agent_user(agent_user_id)
         return status
 
-    async def async_sync_entities_all(self):
+    async def async_sync_entities_all(self) -> int:
         """Sync all entities to Google for all registered agents."""
         if not self._store.agent_user_ids:
             return 204
@@ -249,7 +249,7 @@ class AbstractConfig(ABC):
         )
 
     @callback
-    def async_schedule_google_sync_all(self):
+    def async_schedule_google_sync_all(self) -> None:
         """Schedule a sync for all registered agents."""
         for agent_user_id in self._store.agent_user_ids:
             self.async_schedule_google_sync(agent_user_id)
@@ -279,7 +279,7 @@ class AbstractConfig(ABC):
         self._store.pop_agent_user_id(agent_user_id)
 
     @callback
-    def async_enable_local_sdk(self):
+    def async_enable_local_sdk(self) -> None:
         """Enable the local SDK."""
         setup_successful = True
         setup_webhook_ids = []
@@ -323,7 +323,7 @@ class AbstractConfig(ABC):
         self._local_sdk_active = setup_successful
 
     @callback
-    def async_disable_local_sdk(self):
+    def async_disable_local_sdk(self) -> None:
         """Disable the local SDK."""
         if not self._local_sdk_active:
             return
@@ -500,7 +500,7 @@ class GoogleEntity:
         self.hass = hass
         self.config = config
         self.state = state
-        self._traits = None
+        self._traits: list[trait._Trait] | None = None
 
     @property
     def entity_id(self):
@@ -508,7 +508,7 @@ class GoogleEntity:
         return self.state.entity_id
 
     @callback
-    def traits(self):
+    def traits(self) -> list[trait._Trait]:
         """Return traits for entity."""
         if self._traits is not None:
             return self._traits
diff --git a/homeassistant/components/google_assistant/trait.py b/homeassistant/components/google_assistant/trait.py
index 3752574f31f..a075a251dba 100644
--- a/homeassistant/components/google_assistant/trait.py
+++ b/homeassistant/components/google_assistant/trait.py
@@ -1,6 +1,7 @@
 """Implement the Google Smart Home traits."""
 from __future__ import annotations
 
+from abc import ABC, abstractmethod
 import logging
 from typing import Any, TypeVar
 
@@ -196,9 +197,10 @@ def _next_selected(items: list[str], selected: str | None) -> str | None:
     return items[next_item]
 
 
-class _Trait:
+class _Trait(ABC):
     """Represents a Trait inside Google Assistant skill."""
 
+    name: str
     commands: list[str] = []
 
     @staticmethod
@@ -206,6 +208,11 @@ class _Trait:
         """Return if the trait might ask for 2FA."""
         return False
 
+    @staticmethod
+    @abstractmethod
+    def supported(domain, features, device_class, attributes):
+        """Test if state is supported."""
+
     def __init__(self, hass, state, config):
         """Initialize a trait for a state."""
         self.hass = hass
diff --git a/mypy.ini b/mypy.ini
index b2c6b7a9c83..feb6f5a72ea 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -631,6 +631,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.cloud.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.configurator.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true
diff --git a/tests/components/cloud/test_init.py b/tests/components/cloud/test_init.py
index bd0a4972241..f56789729d8 100644
--- a/tests/components/cloud/test_init.py
+++ b/tests/components/cloud/test_init.py
@@ -135,7 +135,7 @@ async def test_setup_existing_cloud_user(
 
 async def test_on_connect(hass: HomeAssistant, mock_cloud_fixture) -> None:
     """Test cloud on connect triggers."""
-    cl: Cloud = hass.data["cloud"]
+    cl: Cloud[cloud.client.CloudClient] = hass.data["cloud"]
 
     assert len(cl.iot._on_connect) == 4