Gatsby is an open-source framework that uses React to build static websites and web applications. It fetches data using GraphQL and generates static files to be deployed on a web server including CDNs and hosting services.

Its features allow fast, performant, and highly customizable sites optimized for search engines and social media sharing.

Gatsby uses a plugin architecture to easily integrate third-party services such as CMSs, e-commerce platforms, and analytics tools. Deploying static files offer several advantages including faster page load times, better SEO, and lower hosting costs.

Its ecosystem of plugins and themes makes it easy to add functionality and customize the look of your site. Overall, Gatsby is a powerful framework that delivers fast performance, excellent UX/UI design, and scalability while being easy to use.