Azure AD Managed Service Identity has been in preview for several months now, so we wanted to give you an update on what has been happening.
There are now two types of managed identities:
System Assigned:This is the type of managed identity we introduced back in September. It has a 1:1 relation with an Azure resource (e.g., VM) and shares the same life-cycle. When you delete the resource, we automatically clean up the identity.
User Assigned:This new type of managed identity is a standalone Azure resource with its own life-cycle. It enables you to have an identity which can be used by one or more Azure resources.