Web development refers to the process of creating and maintaining websites. It encompasses various tasks, including web design, web programming, content creation, and network security configuration. Web developers use programming languages such as HTML, CSS, and JavaScript to build and optimize websites for functionality and user experience. They also ensure that websites are compatible with different browsers and devices, and often work with web frameworks and content management systems to streamline the development process. As the internet continues to play a crucial role in business and communication, the field of web development remains essential for creating dynamic and interactive online experiences.