[Cpoll]

Why especially Amazon, I haven't seen them shutter any major service?

I've seen lots of companies throw away their V1 and start over (hopefully with the knowledge learned), so my opinion is that it's okay to vendor lock-in and leverage stuff like AWS Load Balancers, ECS, etc. You're going to end up having to rewrite it when you finally scope out your real challenges, so it doesn't matter if V1 was agnostic or vendor-based.

> You're better off investing your time into building your own agnostic solution.

This sounds suspiciously like 'not invented here.'