> if you buy in to certain services, say, any AWS architecture beyond EC2, failover to another provider becomes a lot closer to impractical if not impossible.

> if you buy in to certain services, say, any AWS architecture beyond EC2, failover to another provider becomes a lot closer to impractical if not impossible. Yes. I say this all the time and continue to be amazed that this is such a foreign idea to many cloud users. When you stick to the infrastructure-as-a-service offerings, like EC2, and steer clear of cloud vendors' proprietary platform services, then you evade costly vendor lock-in. And this comes with very little added engineering cost. Granted, each organization will value vendor independence differently, but I suspect many organizations don't give enough consideration to worst-case scenarios.