Many options exist, but I have been annoyed with how finicky some can be. All I need is a well-priced cloud GPU platform, with a good command-line utility like fly.io
Would be cool if I could just use said tool to say send a Python file, and include something like a poetry pyproject.toml to set up the environment + info about what type of server I want it to run on (GPU, etc), and just have it run the file on their servers and send the output back to the command line tool + have cloud storage that the programs can output files too (like model weights).