Web development refers to the process of creating and maintaining websites, web applications, and other online platforms. It involves a combination of various programming languages, frameworks, tools, and techniques to design and develop websites that are functional, user-friendly, and visually appealing.

The process of web development typically involves several stages, including planning, designing, coding, testing, and deployment. Web developers use a range of programming languages such as HTML, CSS, JavaScript, and PHP to create web pages and web applications. They may also use various frameworks such as React, Angular, or Vue.js to streamline the development process and build more complex applications.

In addition to coding, web developers also need to ensure that their websites are optimized for search engines, accessible to all users, and secure from potential cyber threats. This involves implementing best practices for SEO (search engine optimization), responsive design, accessibility, and security.

Web development is a constantly evolving field, with new technologies and techniques emerging regularly. As such, web developers need to stay up-to-date with the latest trends and innovations to ensure that their websites and applications are always at the forefront of technology.