[gitgud]

You can redeploy a Heroku app to many other servers and platforms relatively easily.

However, I'm not sure you can do the same with AWS Lamda Functions. To mean, this means it is like a lock-in.

[viraptor]

It's just code with basic function entry point. You may get your parameters and configuration in a different way, but not much else changes. There are only so many ways to call some code.