Hi @Akshay Bhandakkar ,
Bitbucket uses Git as a version control system. In order to migrate from StarTeam to Bitbucket, you would need to migrate your StarTeam repositories to Git repositories first. Then, you can create empty repositories in Bitbucket Cloud, and push each converted Git repo to the respective Bitbucket Cloud repo.
I'm afraid that we don't have a tool that performs an automated migration from StarTeam to Git.
After a search on the internet, I found some tools developed by other users for such a conversion, e.g.:
You can check if either of them works for the migration of your StarTeam repositories to Git.
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