Web development is the process of building and maintaining websites, web applications, and other web-based solutions. It involves the creation of the front-end and back-end components of a web application or website, as well as the integration of these components into a functional system.

Front-end web development focuses on the design and functionality of the user interface that users interact with. It involves using programming languages such as HTML, CSS, and JavaScript to create the layout, visual design, and interactive elements of a website or web application.

Back-end web development focuses on the server-side of web development, including the server infrastructure, database management, and server-side scripting. It involves using programming languages such as Python, Ruby, or PHP to create the logic and functionality of a website or web application.

Web developers use a range of tools and technologies to create web-based solutions, including content management systems, web frameworks, and development environments. They must also have a good understanding of web standards, search engine optimization, and web security best practices.

Web development is a constantly evolving field, with new technologies and techniques emerging all the time. It requires a deep understanding of both front-end and back-end technologies, as well as a commitment to ongoing learning and development.