Web development involves building and maintaining websites and web applications. Here's a brief overview of the key aspects of web development:

1. Frontend Development: This involves building the user interface and user experience of a website or web application. Frontend developers use languages like HTML, CSS, and JavaScript to create the visual elements that users interact with in their web browsers.

2. Backend Development: Backend development involves building the server-side of web applications. Backend developers work with languages like Python, Ruby, PHP, Java, and frameworks like Node.js, Django, Ruby on Rails, Laravel, etc., to create the logic and functionality that powers the website or application.

3. Database Management: Web developers often work with databases to store and retrieve data for their applications. Common databases used in web development include MySQL, PostgreSQL, MongoDB, SQLite, etc.

4. Web Development Frameworks: Frameworks provide pre-built templates, components, and functionality to streamline the web development process. Examples include React.js, Angular, Vue.js for frontend development, and Express.js, Flask, Spring Boot for backend development.

5. Responsive Design: With the increasing use of mobile devices, web developers need to ensure that their websites are responsive and adapt well to different screen sizes and resolutions.

6. Security: Web developers must consider security practices to protect websites and applications from vulnerabilities such as cross-site scripting (XSS), SQL injection, and other attacks.

7. Version Control: Version control systems like Git are essential tools for web developers to manage code changes, collaborate with other developers, and maintain codebases efficiently.

8. Deployment and Hosting: Deploying and hosting a website involves making it accessible to users on the internet. Developers use platforms like AWS, Heroku, Netlify, or traditional web hosting services to deploy and host their web applications.

9. Continuous Learning: Web development is a field that constantly evolves with new technologies, frameworks, and best practices. Continuous learning is essential for web developers to stay updated and proficient in their skills.

Whether you're interested in frontend, backend, or full-stack development, mastering these aspects will help you become a proficient web developer.