What It Is
A full-stack developer works on the whole website, from the visible design in the browser down to the server and database underneath. The "stack" is the set of technologies layered together to run a site, such as HTML, CSS and JavaScript on top, and a server language and database below. A full-stack person is a bit like a general contractor who can frame the walls and also wire the electrical panel.
Why It Matters for Your Business
For a small business, hiring someone with full-stack skills can mean fewer hand-offs and fewer finger-pointing moments. If a booking form looks fine but submissions never arrive, a full-stack developer can trace the problem from the button click to the database without calling in a second person. That usually saves time and money on modest projects, like adding online payments to an existing site.
Good to Know
Full stack does not mean expert in everything. Most full-stack developers are stronger on one side. When you interview someone, ask for examples of both a design they built and a feature they connected, such as a payment form or a CRM integration. Seeing both sides in real projects tells you more than the title does.