What is a static website?
A static website serves pre-built pages straight to the visitor, instead of assembling each page from a database on every request like WordPress does. The upside is that static sites are extremely fast, secure, and cheap to host, with almost nothing to break or hack. The trade-off is they are less suited to features that need live data, though modern tools and a CMS cover most business needs.
In plain terms: a static site is like a printed brochure that is already finished, so it loads instantly. A dynamic site like WordPress builds each page fresh every time someone visits, which is slower and has more moving parts that can break.
For most business and marketing sites, static is the better choice: faster for visitors, better for SEO, far more secure, and cheap or free to host. A Webflow site gives you that speed with an easy CMS on top, so you still get a blog and editable content.
You would only need a fully dynamic setup for things like large user accounts, live inventory, or complex web apps. For the vast majority of businesses, a fast static-style site is exactly right.