Why is it necessary to have multiple identity providers during mergers and acquisitions or cloud migration?

Having multiple identity providers during mergers and acquisitions or cloud migration is necessary primarily to facilitate the integration of various user domains. When organizations merge or migrate to the cloud, they often bring together different IT environments, each with its own user directories, authentication systems, and access controls. Maintaining multiple identity providers allows organizations to manage these diverse user identities more effectively, with the flexibility needed to integrate existing systems while transitioning users to a unified access solution.

This approach helps to ensure that all users, regardless of their original domain or identity management system, can access necessary resources without disruption. It also supports a gradual consolidation process where identities can be synchronized and migrated over time, reducing the risk of downtime or access issues during the transition. By allowing for a smoother integration, organizations can benefit from improved efficiency and enhanced user experience as they work towards a more unified identity management strategy.