Web development refers to the process of designing, building, and maintaining websites and web applications. It involves a range of skills and techniques, including programming, database design, user interface (UI) design, and search engine optimization (SEO).

The web development process typically starts with planning and analysis, where the requirements for the website or application are defined, and a project plan is created. This is followed by design, where the visual and functional aspects of the website or application are created, often using wireframes and mockups.

The next stage is development, where the website or application is actually built using a combination of front-end and back-end technologies. Front-end technologies, such as HTML, CSS, and JavaScript, are used to create the user interface and user experience (UX), while back-end technologies, such as PHP, Python, or Ruby on Rails, are used to create the server-side logic and database integration.

Once the website or application is built, it undergoes testing and quality assurance (QA) to ensure that it works as intended and is free of bugs and errors. Finally, the website or application is launched, and ongoing maintenance and updates are performed to keep it running smoothly and up-to-date.

Overall, web development is a complex process that requires a wide range of technical and creative skills. It is essential for creating modern, responsive, and engaging websites and web applications that meet the needs of businesses and users alike.