What is Backend and Frontend?

Every web application or website is built in two fundamental layers: the frontend (client-side) — what the user sees and interacts with in their browser — and the backend (server-side) — the server, database, and business logic running behind the scenes. The interplay between these two layers is what gives modern web applications their functionality and intelligence.

What is Frontend?

The frontend encompasses everything rendered in the user's browser: HTML for structure, CSS for styling, and JavaScript for interactivity. Buttons, menus, forms, animations, and page layout all belong to the frontend. Modern frontend development commonly uses frameworks like React, Vue.js, or Angular to build dynamic, responsive user interfaces efficiently.

What is Backend?

The backend consists of the server, database, and application logic. When a user submits a form, the backend processes the data, validates it, saves it to the database, and returns a response. Common backend technologies include PHP, Python, Node.js, Java, and .NET. Databases are typically MySQL, PostgreSQL, or MongoDB depending on the use case.

Full-Stack Development

A developer who works across both frontend and backend is called a full-stack developer. The Teknobursa development team includes full-stack engineers capable of building end-to-end web applications — from the user interface and frontend interactions to the server architecture and database design.