Are you hosting static files? Like AWS S3? It's a giant file server? With some fancy framework specific aspects?
Or is this like 'Wix', but using a specific framework?
Servers? Lambdas? Where is the business logic?
Is there storage, like RDMBS or or a document/noSQL DB?
Maybe it's fair to assume a lot of people are familiar with Next.JS ... but I suggest most are not. 'Next.JS is a React front-end Framework' is helpful, but most of us already know React itself is a framework, so a 'framework on a framework' probably needs a few more words as well.
So even a few well placed, even pedantic descriptions might help a lot, especially for those who arrive 'completely naive' i.e. have maybe 'heard of' Vercel, but that's it.