I've been using StackHut loads recently. Though it's more of a replacement for using AWS Lambda and AWS Gateway together.

There's a CLI tool and you can deploy literally any function you've declared locally which StackHut then automagically available through HTTP, no web server routing or request handling required (on server side at least).

It's a super fun idea and it's surprisingly easy to get started with. If you've got some free time this weekend, totally check it out.