Gatsby is a popular static site generator that leverages React, making it particularly appealing for developers who want to create fast, efficient websites without extensive configuration. It offers a user-friendly setup with a comprehensive tutorial and a robust ecosystem of plugins, allowing users to tailor their projects with tools like gatsby-plugin-sass and gatsby-transformer-remark. CSS can be managed through CSS-in-JS or CSS Modules, with the latter providing scoped styling to avoid class name clashes. Gatsby's data layer is powered by GraphQL, offering a visual interface for database queries, and it supports various deployment options including Netlify, which simplifies the hosting process. The platform's ease of use, combined with its potential for customization, makes it an attractive choice for those exploring static site generators, especially as it continues to evolve with new funding and community contributions.