https://www.freecodecamp.org/learn/back-end-development-and-apis/
This is probably more up to date than that blog post.
When I was learning I used Heroku free tier to host sites/servers. I was also using the MERN stack and used a Heroku CLI tool to do deployments.
Here’s a step by step guide on freecodecamp.org for how to deploy an app to heroku. Hope it’s helpful!
Thanks for links to 2028 info! I only posted this here because it felt like a tiny cathartic thing to do in the moment. I appreciate your thoughtful response.