[nthj]

Git and/or feature flags exist for this reason. Adding a network layer isn't the fundamental insight here, but it can cause additional consequences.

[thayne]

I'm talking about the scalability of actually delivering new code to servers (or "serverless" runtimes). Feature flags don't help with that.

Admittedly, it isn't a scalability problem you will run into right away.

But when you need to roll out an emergency fix, there is a big difference between deploying to thousands of servers that all have everything, and ten servers running a single service.