There are lots of reasons why the need for data migration can arise, whether:
You’re modernising your legacy system and need the data migrated from the old system over to the new one.
Your data needs to be synchronised between the old legacy system and new system so that a side-by-side system rollout can occur.
You’ve got a new business application and want to integrate the data from an older application.
You’ve acquired a new subsidiary, or you’re merging and you need data to be moved from many systems on to one.
You’re moving your IT platforms to the cloud to help scalability and require data and application migration.
You’re moving data from an existing server to a new or existing storage system, or you’re consolidating data centrally.