Full-stack web development refers to the development of both front-end and back-end portions of a web application. The front-end includes HTML, CSS, and JavaScript and deals with the visual aspects seen by users. The back-end includes technologies like Node.js, APIs, databases, and deals with behind-the-scenes functionality. The document discusses key front-end technologies like HTML, CSS, JavaScript and how they are used. It also discusses important back-end technologies like Node.js, APIs and their uses. Examples of a sample portfolio website project are shown to demonstrate how various front-end and back-end technologies can be combined to build full-stack web applications. The document concludes that