In order for Pulumi to be widely used, it must be easy to understand, but the manual is a pity.

i feel like its pretty easy to use for developers, but for operators/sysadmin its a pain xD

^^

That's why we now have YAML support https://www.pulumi.com/docs/intro/languages/yaml/

I’m hoping to use the Python language whenever possible.

We generally say that TypeScript is uniquely well suited for expressing pulumi programs, but it's only a small benefit compared to the other languages. If you know Python well it should be very suitable.

Yes.

Is there a Korean subsidiary of Pulumi?

No. We currently only have offices in the US and Europe, plus one Australian employee.

@echoing-dinner-19531 as a person migrated from Terraform yaml does not make sense for me. I chose Pulumi because with Terraform I can’t achieve what I can achieve with proper if/for loop in Python(in my case)

Sure, YAML is there for simple cases where you just need to stitch a few things together in a custom way. We wouldn't recommend it for anything complex requiring loops or conditionals. For those either step up into a templating language of your choice (our yaml runtime has first class support for calling into template compilers that can write out a json result) or use a fully featured language such as Python.

The developer documentation is actually pretty decent. I don't have much AWS knowledge but the API is pretty easy to follow. I do think that using TypeScript is a much better bet as it doesn't need to use venv (on Windows venv can be a pain). Plus you get static typing which is even better! ;D That being said, my company is looking to go with Terraform and I'm one of the few teams on Pulumi and I can say I have no regrets.