A/B testing of branches with GitLab Pages (Product)
When we have GitLab Pages your master branch will automatically be deployed.
If you have a feature branch it should be possible to say merge if better instead of merge.
In this case the branch will be show to a percentage of users until it is clear it is better. If it is worse it will be closed and the testing will stop.
This allows for easy A/B tests for static sites without forcing all users to load a bunch of javascript.