A full stack developer is a software engineer who has expertise in all the layers of a web application, from the user interface to the database.
The front-end of a web application is the part that the user interacts with and includes the HTML, CSS, and JavaScript components.
The back-end, on the other hand, consists of the server, application, and database components and is responsible for storing, processing, and serving the data to the front-end.
The main advantage of full stack development is that it allows for a more integrated and seamless development process, as the same person is responsible for both the front-end and back-end components. This can lead to better collaboration and communication, faster development, and a more seamless user experience.