Scanendtile I have no idea, I would have to read up on it. I think you mean a SPA (single page application) or the next step the PWA (progressive web app) those are mainly javascript framework based applications that seam to don't have reload times because they work asynchronous.
I think next.js provides this. But tbh if you don't know how this works you probably should start with an easier concept and work your way up because you likely will underestimate the workload involved. :)