# Gatsby Data Layer (GraphQL)
> The Gatsby Data Layer is a specialized internal middleware that uses GraphQL to pull data from multiple sources—including CMSs, databases, and local files—into a unified schema. It is a core component of the Gatsby web framework, enabling developers to query data uniformly across an application during the build process.
- URL: https://optimly.ai/brand/gatsby-data-layer-graphql
- Slug: gatsby-data-layer-graphql
- BAI Score: 82/100
- Archetype: Challenger
- Category: Software Development Tool
- Last Analyzed: May 7, 2026