What is generally meant by SSG is that at runtime you send fully usable static pages and don't need to run any app logic. This radically expands your options fo

What is generally meant by SSG is that at runtime you send fully usable static pages and don't need to run any app logic. This radically expands your options for hosting (S3 + CDN, done). You can't have personalization unless you run app servers, you can provide some alternatives at build time (localization, AB tests) but nothing actually personalized. Whereas with SSR you run an app aware server, which means you can store client state and do everything with it sending to the browser final HTML, but it is more costly. So to me and many others whether a framework can do SSR or SSG is a very important distinction, critical for infrastructure planning. I often see it being downplayed together with a promotion of various proprietary platforms offering edge computing but this stuff is just not necessary for many cases. Edit: No idea what terminology is used at NextJS, above is what I think is generally understood by SSG (static site) and SSR (server-rendered site).