Design vs. development, in one sentence

Web design decides what a site looks like and how it should feel to use — layout, color, typography, the user's path through a page. Web development is what makes that design actually work in a browser and talk to real data — the code, the database, the logic that runs when someone clicks "buy."

A useful analogy: design is the architectural drawing and interior styling of a house; development is the plumbing, wiring, and structural build that makes the house livable. You need both, but they are different skills, and a beautiful drawing with no wiring behind it is just a picture.

Frontend vs. backend

Frontend is everything that runs in the visitor's browser — the part they see and click: layout, buttons, animations, forms. Backend is everything that runs on a server, invisible to the visitor: processing that form submission, checking a password, saving an order to a database, calculating a price. A slow "website" is very often actually a slow backend — the frontend can be instant while it waits on a server response.

Where "AI" actually fits into a website

In most real projects, "AI" is not a separate layer floating above the site — it's a backend feature like any other: a chatbot that calls a language model API, a recommendation engine that reads past behavior, an image tool that processes an upload. It still needs a frontend to be used and a backend to run and be paid for. Treat "add AI" the way you'd treat "add search" — a specific feature with a specific job, not a magic ingredient.

What a "microservice" is, without the jargon

Older systems were often built as one large program doing everything (a "monolith"). A microservice architecture instead splits a system into small, independent services that each do one job — one handles logins, another handles payments, another handles search — and they talk to each other over the network. The benefit is that each piece can be updated, scaled, or replaced without touching the others. The cost is more moving parts to coordinate. Most small business websites don't need this; it earns its complexity at real scale, not on day one.

The practical version for a client

  • If you're unsure whether to ask for "design" or "development" — describe the outcome you want, and let the scope get split for you.
  • If a feature "feels slow," ask whether it's a frontend delay (animation, loading) or a backend delay (waiting on the server) before assuming it's the design's fault.
  • Don't ask for "AI" in the abstract — ask for the specific behavior you want (answer questions, recommend products, summarize text) and let that get matched to the right tool.