SSG, or Static Site Generator, is a tool that creates static websites from templates and content files. Unlike traditional web development, which often relies on dynamic content generated by a server, SSGs pre-build HTML pages during the development process. This results in faster load times and improved security since there are no server-side processes running when a user visits the site. Popular examples of SSGs include Jekyll, Hugo, and Gatsby. These tools allow developers to write content in formats like Markdown and then generate a complete website that can be easily hosted on platforms like GitHub Pages or Netlify.