Site mapping is the process of creating a visual representation of a website's structure. It outlines the various pages and their relationships, helping to organize content and improve navigation. A site map can be presented as a diagram or a list, showing how users will move through the site. This tool is essential for web developers and designers, as it aids in planning the layout and functionality of a website. By using a site map, teams can identify potential issues early, ensuring a smoother user experience and more efficient development process.