There are different considerations depending on the type of technology used and what the intended scaling factors are. We generally have three types of host that we pick between:

For custom software and sites with advanced functionality we have used Digital Ocean for dedicated servers for many years and love their combination of reliability, modern server technology and great support when needed (although they're self managed).

For Nocode websites we like the Webflow platform which uses Amazon Web Services (AWS) as its hosting backbone.

For Jamstack websites we're big fans of Netlify and Vercel.