A flat site structure, also known as shallow architecture, is a streamlined and straightforward way to organize a website or digital platform. In a flat structure, all pages or sections are equally accessible, usually from a single menu or homepage.

Think of it like walking into a room where everything you need is within arm's reach and there are no winding paths or layered levels to navigate. For smaller websites, landing pages, and apps, a flat structure can offer a user-friendly experience, allowing users to quickly find what they need without digging through multiple layers or categories.