Thanks for your patience @Paritosh Mishra .
We can create alerts on Azure SQL Elastic Pool that will send a notification anytime there is a write operation on elastic pool. As an example if we add a new DB or remove a DB it will send a notification to alert us. Please check the below alert that we can create:
We an create sms notification, mail notification etc. for receive these alerts.
Please let us know if this helps or else we can discuss it further.