What is the Federation in Azure SQL?
SQL Azure Federation provides tools that can enable developers to access or share databases among themselves in SQL Azure.
It enables users to take advantage of resources within the cloud
It allows users to have their own database or share databases amongst each other
It reduces the possibility of a single point of failure
It provides cost-effectiveness, by using cloud resources only when needed
🔗Reference : stackoverflow.com
🔗Source: Azure Interview Questions and Answers