Hi Paul,
As far as I know, with the impending removal of the Impersonation role in Microsoft Exchange, there are a few alternative options available:
Application Impersonation: This is a role-based access control in Exchange that allows a service account to impersonate users in an organization to perform tasks on their behalf. It's commonly used by applications or services that need to access mailboxes.
Delegate Access: Instead of using impersonation, users can be granted delegate access to other mailboxes. This allows them to act on behalf of the mailbox owner but without the need for a specific impersonation role.
OAuth and Modern Authentication: Microsoft is moving towards modern authentication methods like OAuth. With OAuth, applications can request access to mailboxes with the user's consent, removing the need for service accounts and impersonation.
Role-Based Access Control (RBAC): RBAC allows administrators to define custom roles with specific permissions. While impersonation is being deprecated, RBAC can still be used to grant appropriate permissions to users or service accounts.
It's essential to evaluate these alternatives based on your organization's requirements and security policies. Additionally, consulting with a Microsoft technical expert or referencing Microsoft's official documentation can provide more detailed guidance on choosing the most suitable alternative for your needs.
