When creating the microsoft add-in we have to set the client secret which is being used by our apps to provide contextual information in the add-in. This secret is set to expire at max every 24 months. Administrators are not informed when this expiry will happen. Once once the add-in stops working they get to know that it has expired.
Solution - Alerts to be sent to azure admins to inform they of the client secret for any app or add-ins created. They should be able to configure these alerts based on the importance of the app or add-in