Multi-instance releases for apps
Multi-instance releases are now supported for apps built in the new app builder, in addition to classic apps and workflows. To enable multi-instance releases, navigate to Settings > Source control > Edit settings and turn on Enable multi-instance releases.
Organizations using Source Control can manage releases of protected apps, classic apps, and workflows across multiple deployment instances. This feature enables you to publish different release versions across instances, making it possible to test a newer version on staging or development instances before promoting to production.
At this time, GitHub is the only Source Control Manager (SCM) that is supported for apps. Others are being added.
Multi-instance releases work slightly differently for apps and classic apps. Learn more about the difference, or get started with multi-instance releases for apps.