Having the ABILITY to move seamlessly and without significant cost is absolutely critical.

It gives you flexibility if the provider isn't keeping pace with the market and it prevents the provider from jacking prices relative to its competitors.

Vendor lockin is awful. Hypothetically, imagine how stuffed you'd be if your core virtualisation provider jacked prices 500%! You'd be really hurting.

...ohwait.

You're not really locked in in any meaningful way currently, you just switch the API you're using. Rather like is being demonstrated here.

I don't understand - what do they mean when they say you can run things on your own infrastructure then?

They say "serverless infrastructure", which is something else.

Your own infrastructure in the same sense as your own AWS EC2 machines.

> your own AWS EC2 machines

Not disagreeing, but this is quite an expression.