I use Cloudflare Serverless for front end apps and Render for backend services.
- Cloudflare [1] scales easily and has a lot of easy to use services like databases and storage buckets, JAM Stack front end pages, and CDN services for images and videos.
- Render [2] has been great for us to spin up Python services quickly. I haven't worked with a production load on Render, but I hear good things :)