Web Development is the practice of creating and maintaining websites or web applications that run on browsers. It combines front-end development—focused on user interfaces, design, and interactivity—with back-end development, which handles server-side logic, databases, and application functionality. Developers use languages and frameworks such as HTML, CSS, JavaScript, React, Angular, Node.js, Python, and PHP to build responsive, secure, and scalable web solutions. Modern web development also emphasizes performance optimization, accessibility, and integration with cloud services and APIs. Ultimately, it enables businesses, organizations, and individuals to deliver information, services, and interactive experiences to users worldwide through the internet.