Ask HN: What ML cloud hosting service for my use case?

I want to build a web app that allows users to uploads photos used to train stable diffusion model LoRA or Embedding then run inference to gen images for the users with the trained weight. Similar to photoai.com

I’m currently using Goog Colab but it doesnt have any API for the webapp to call.

What would be an easy to setup, low cost, decent latency (10mish for training) ML hosting would you recommend?

Also what stack do you suggest to use for the web app that can easily integrate with the ML host with plenty of available tutorials ?