The watcher and the SQL targets it monitors can be in different subscriptions within the same Microsoft Entra ID tenant. Similarly, if the watcher is using a database on an Azure Data Explorer cluster as its data store, the cluster must be in any subscription within the same tenant as the watcher. If you want to monitor SQL targets in multiple tenants using a single data store, create a watcher in each tenant, and use a database in either Real-Time Analytics or on a free Azure Data Explorer cluster as the data store for all watchers. For more information, see Monitor large estates.