I have a website with 500 pages, and a side panel that displays the 5 latest blog posts - when I add a new post I would have to update all 500 pages to make the 5 latest post in the side panel show correctly?
Is that right? (I recall that iframe is something that should be avoided, would be interested if there are any other tricks (but I guess not with a purely static page))
Without seeing your code it’s impossible to know for sure, but I think the answer’s yes, the whole site will be rebuilt and deployed. The good thing about Hugo is that this will only a take a second or two (or maybe less!).