Full Stack Web Development involves creating the entire web application, encompassing both frontend and backend, using a combination of languages, frameworks, and tools. Frontend development focuses on user interfaces with technologies like HTML, CSS, and JavaScript. Backend development manages server-side logic, databases, and server configurations with languages like Node.js, Python, or Java. The developer ensures effective communication between frontend and backend through APIs. Git for version control and collaboration, along with testing and debugging practices, ensures a comprehensive and functional web application.