Full-stack web development refers to end-to-end application software development, including front-end and back-end. The front end consists of the user interface, and the back end handles business logic and application workflow. By definition, a stack is something in bulk, so it makes sense that the term is appropriate for software development. In this context, a complete stack contains all the elements of a complete software project.
For example, a full stack consists of all components required for the development front and backend. Of course, frontend and backend are idioms for different stack parts that need to be addressed.
In addition to front-end and back-end development, the layers of the stack may or may not include functionality specific to the database, DevOps, or mobile app development.
Also, See: Enterprise Web Development