caching Prefetching Assets optimalization Image optimalization Easy connecting to and consuming external sources such as S3, Google Sheets, Google Analytics, databases, JSON, YAML, file system, other CMS (Drupal, Contentful, Prismic, WordPress, etc.) – see https://www.gatsbyjs.com/docs/content-and-data/ All accessible via GraphQL. Structured data annotation (Open Graph, JSON-LD, ...)