I have dozens of domains and would like to deploy to make use. But not sure where and how I should deploy them. Asking as a webdev but little green on production deployments. Including best stack to use. Thanks in advance. It seems like a simple problem but I'm having analysis paralysis of over thinking it. For stack I'm thinking react, node, mongodb...
For your stack ("MERN") I'd consider Heroku, Netlify, Firebase or AWS.