Full Stack Web Development refers to the development of all layers of a web application, including the front-end (client-side) user interface, the back-end (server-side) logic, and the database. It involves using multiple programming languages and frameworks to build scalable, robust, and responsive web applications that can handle user requests, data storage and retrieval, and business logic. Full Stack Web Developers are responsible for creating and maintaining a seamless user experience, ensuring the security and performance of the application, and implementing new features and functionality. They must have a strong understanding of web development technologies such as HTML, CSS, JavaScript, and various server-side languages like Python, Ruby, or Java, as well as experience working with databases and web servers.