[colesantiago]

Last I checked, Express is extremely slow and will significantly impact your SEO if you're a content business and doesn't really scale very well if you get huge amounts of traffic like I have.

These days I use Go, Deno or Crystal which is much faster.

For hosting I recommend Cloudflare Pages, Vercel, (maybe Netlify) and Render.

[luastoned]

Express by itself isn't slow at all, neither does if affect your SEO.

You completely ignored OP's question, lol.

[colesantiago]

And the answer is that express and node is 'de-facto' slow.

Nobody building a serious application in 2020 should consider express anymore for building a production grade application.

[bdcravens]

The frontend impacts your SEO way more than your backend, especially if you're using a typical framework. Additionally, things like your database (more specifically, your schema and your queries) will impact the speed of your backend more than any particular library.