Use multiple Azure subscriptions
Most Azure users will only ever have a single subscription. However, if you are part of more than one organization or your organization has divided up access to certain resources across groupings, you may have multiple subscriptions within Azure. The CLI supports selecting a subscription both globally and per command.
For detailed information on subscriptions, billing, and cost management, see the billing and cost management documentation.
Tenants, users, and subscriptions
You might have some confusion over the difference between tenants, users, and subscriptions within Azure. A tenant is the Azure Active Directory entity that encompasses a whole organization. This tenant has at least one subscription and user. A user is an individual and is associated with only one tenant, the organization that they belong to. Users are those accounts that sign in to Azure to create, manage, and use resources. A user may have access to multiple subscriptions, which are the agreements with Microsoft to use cloud services, including Azure. Every resource is associated with a subscription.
To learn more about the differences between tenants, users, and subscriptions, see the Azure cloud terminology dictionary. To learn how to add a new subscription to your Azure Active Directory tenant, see Associate or add an Azure subscription to your Azure Active Directory tenant. To learn how to sign in to a specific tenant, see Sign in with Azure PowerShell.
Change the active subscription
In Azure PowerShell, accessing the resources for a subscription requires changing the subscription associated with your current Azure session. This is done by modifying the active session context, the information about which tenant, subscription, and user cmdlets should be run against. In order to change subscriptions, an Azure PowerShell Context object first needs to be retrieved with Get-AzSubscription and then the current context changed with Set-AzContext.
The next example shows how to get a subscription in the currently active tenant, and set it as the active session:
$context = Get-AzSubscription -SubscriptionId ... Set-AzContext $context
To learn more about Azure PowerShell contexts, including how to save them and quickly switch between them for working with multiple subscriptions easily, see Persist credentials with Azure PowerShell contexts.