What is staged rollout?
With staged rollouts, you can release the upcoming version of your app in a gradual way, slowly incrementing the percentage of users who receive the update. In this way, you can limit the scope of any bugs or issues in your release, as well as test enhancements or other features in a controlled, measurable way.
What is a staggered rollout?
A Staged Rollout is a method of updating your application, while reaching only a certain percentage of users. It enables you to release a single product version very slowly - over a period of days. It is a much safer approach than a sudden big-bang release.