diff --git a/homeassistant/components/cloud/__init__.py b/homeassistant/components/cloud/__init__.py
index 18bfc27913d..c11680e487f 100644
--- a/homeassistant/components/cloud/__init__.py
+++ b/homeassistant/components/cloud/__init__.py
@@ -115,26 +115,37 @@ GACTIONS_SCHEMA = ASSISTANT_SCHEMA.extend(
     {vol.Optional(CONF_ENTITY_CONFIG): {cv.entity_id: GOOGLE_ENTITY_SCHEMA}}
 )
 
+_BASE_CONFIG_SCHEMA = vol.Schema(
+    {
+        vol.Optional(CONF_COGNITO_CLIENT_ID): str,
+        vol.Optional(CONF_USER_POOL_ID): str,
+        vol.Optional(CONF_REGION): str,
+        vol.Optional(CONF_ALEXA): ALEXA_SCHEMA,
+        vol.Optional(CONF_GOOGLE_ACTIONS): GACTIONS_SCHEMA,
+        vol.Optional(CONF_ACCOUNT_LINK_SERVER): str,
+        vol.Optional(CONF_ACCOUNTS_SERVER): str,
+        vol.Optional(CONF_ACME_SERVER): str,
+        vol.Optional(CONF_API_SERVER): str,
+        vol.Optional(CONF_RELAYER_SERVER): str,
+        vol.Optional(CONF_REMOTESTATE_SERVER): str,
+        vol.Optional(CONF_SERVICEHANDLERS_SERVER): str,
+    }
+)
+
 CONFIG_SCHEMA = vol.Schema(
     {
-        DOMAIN: vol.Schema(
-            {
-                vol.Optional(CONF_MODE, default=DEFAULT_MODE): vol.In(
-                    [MODE_DEV, MODE_PROD]
-                ),
-                vol.Optional(CONF_COGNITO_CLIENT_ID): str,
-                vol.Optional(CONF_USER_POOL_ID): str,
-                vol.Optional(CONF_REGION): str,
-                vol.Optional(CONF_ALEXA): ALEXA_SCHEMA,
-                vol.Optional(CONF_GOOGLE_ACTIONS): GACTIONS_SCHEMA,
-                vol.Optional(CONF_ACCOUNT_LINK_SERVER): str,
-                vol.Optional(CONF_ACCOUNTS_SERVER): str,
-                vol.Optional(CONF_ACME_SERVER): str,
-                vol.Optional(CONF_API_SERVER): str,
-                vol.Optional(CONF_RELAYER_SERVER): str,
-                vol.Optional(CONF_REMOTESTATE_SERVER): str,
-                vol.Optional(CONF_SERVICEHANDLERS_SERVER): str,
-            }
+        DOMAIN: vol.Any(
+            _BASE_CONFIG_SCHEMA.extend(
+                {
+                    vol.Required(CONF_MODE): vol.In([MODE_DEV]),
+                    vol.Required(CONF_API_SERVER): str,
+                }
+            ),
+            _BASE_CONFIG_SCHEMA.extend(
+                {
+                    vol.Optional(CONF_MODE, default=DEFAULT_MODE): vol.In([MODE_PROD]),
+                }
+            ),
         )
     },
     extra=vol.ALLOW_EXTRA,
diff --git a/tests/components/cloud/test_http_api.py b/tests/components/cloud/test_http_api.py
index 9d91619016d..149a70406a7 100644
--- a/tests/components/cloud/test_http_api.py
+++ b/tests/components/cloud/test_http_api.py
@@ -128,6 +128,7 @@ async def setup_cloud_fixture(hass: HomeAssistant, cloud: MagicMock) -> None:
                 "region": "region",
                 "relayer_server": "relayer",
                 "acme_server": "cert-server",
+                "api_server": "api-test.example.com",
                 "accounts_server": "api-test.hass.io",
                 "google_actions": {"filter": {"include_domains": "light"}},
                 "alexa": {
diff --git a/tests/components/cloud/test_init.py b/tests/components/cloud/test_init.py
index 5e2880694d4..a665b4328b7 100644
--- a/tests/components/cloud/test_init.py
+++ b/tests/components/cloud/test_init.py
@@ -141,6 +141,7 @@ async def test_setup_existing_cloud_user(
                     "user_pool_id": "test-user_pool_id",
                     "region": "test-region",
                     "relayer_server": "test-relayer-serer",
+                    "api_server": "test-api-server",
                 },
             },
         )