Gatsby Adapters are a new feature that enables seamless integrations between Gatsby and other platforms by taking the production output from Gatsby and turning it into something your deployment platform understands. Gatsby Adapters are responsible for applying HTTP headers, redirects and rewrites, wrapping serverless functions with platform-specific code, and applying trailing slash behavior to URLs. The adapters can also create custom HTTP headers and upload assets to CDNs. With the introduction of Gatsby Adapters, users can now deploy and host Gatsby on their preferred platforms without needing to write additional glue code. The feature is designed to make it easier for developers to deploy and host Gatsby on various platforms, including Netlify.