Web development is the process of creating and maintaining websites and web applications. It encompasses various tasks, including web design, front-end development, back-end development, and server management. Web developers use programming languages like HTML, CSS, and JavaScript to design and structure the visual elements of a website. They ensure responsiveness, making sites functional across different devices and screen sizes.

The back-end development involves server-side scripting, managing databases, and ensuring the functionality of web applications. Keywords like PHP, Python, Ruby on Rails, and Node.js are often associated with this aspect. Security is paramount, with developers implementing measures to protect user data and prevent cyber attacks.

Collaboration and version control using tools like Git facilitate teamwork among developers. Content Management Systems (CMS) like WordPress simplify website management for non-technical users. As web technologies evolve, staying updated is crucial to deliver modern and efficient websites. Accessibility and user experience (UX) are focal points, ensuring websites are usable and inclusive for all users.

In conclusion, web development is a multifaceted process involving design, coding, security, and collaboration, all aimed at creating functional and visually appealing websites and applications.