Anyone who can verify if aws step functions is supported now? Thanks!

They are. There's an example here

Thanks, but any example using python?

There's a whole blog post on that very subject https://www.pulumi.com/blog/intro-to-step-functions/

To get the lambda function arn, it uses 'apply' function, but when there are multiple lambda functions, do I need to use layered 'apply' for all functions? I tried several different ways, but they don't seem to be working.

So you probably want to use

pulumi.all

instead. The python example doesn't use that, but you should get a good idea from the typescript example

For those who are curious about this,

Output.all(hello_world_fn.arn,nice_fn.arn).apply(lambda args: ...)

https://www.pulumi.com/blog/intro-to-step-functions/