docs/data/reusables/migrations/about-migrations.md

If you're moving between {% data variables.product.company_short %} products, such as from {% data variables.product.prodname_ghe_server %} to {% data variables.product.prodname_ghe_cloud %}, or from another code hosting platform, such as Bitbucket Server or GitLab, to {% data variables.product.company_short %}, you'll want to bring your work with you: your code, the code's history, and all of your past conversations and collaboration.