If you're looking to try it out in a simple way, you could probably dynamically load different functionality or modules with environment variables. But I'm also looking for a good resource
This is what we are trying now, but that can't do everything. Some teams use launch darkly, but I'm also looking at what level of abstraction we should try to do, and things such as testing both branches, etc. It seems an important architectural refactor to go into feature flag territory yet I see very little discussion on best practices there.