Full stack development refers to the process of building web applications that involve both front-end (client-side) and back-end (server-side) development, as well as database management and server configuration. A full-stack developer is proficient in all of these areas and can work on all layers of a web application, from user interface design to server-side logic and database integration. Full-stack development typically involves the use of a wide range of technologies and tools, including programming languages, frameworks, libraries, and databases, among others.