Comment by bluehatbrit

Aggressively avoiding lock-in is something I've never quite understood. Unless your provider of choice is also your competitor (like Spotify with Amazon) it shouldn't really be a problem. I'm not saying I'm a die hard cloud fan in all aspects but if you're going with it you may as well use it. Typically trying to avoid vendor lockin really ends up more expensive in the long run, you start avoiding the cheaper services (lambda for background job processing) for what may never really be a problem.

The one place I can see avoiding vendor lock-in as really useful is it often makes running things locally much easier. You're kind of screwed if you want to properly run something locally that uses SQS, DynamoDB, and Lambda. But that said, I think this is often better thought of as "keep my system simple" rather than "avoid vendor lock-in" as it focuses on the valuable side rather than the theoretical side.