Home / Reference Apollo GraphOS Developer Reference Explore reference information about developing with GraphOS Supergraph Architecture Framework Supergraph Architecture Framework Overview The Apollo Supergraph Architecture Framework (SAF) provides a collection of best practices in supergraph development. Security Protect your federated GraphQL API from malicious actors and unintended changes. Performance Improve your supergraph's request and response performance. Federation Reference Federation Directives Apollo Federation specific GraphQL directives. Federation Changelog Understand changes between Apollo Federation versions. GraphOS Router Reference Log Exporters Learn to configure built-in logging in the router. Metrics Exporters Learn about collecting router metrics with OpenTelemetry. Trace Exporters Learn about collecting tracing information from the router. Rhai API Use the Rover CLI to publish schemas as part of your CI/CD pipeline. Migration Guides From Schema Stitching Learn how to transition from schema stitching to Apollo Federation. From Gateway to Router Learn how to migrate from the @apollo/gateway to the GraphOS Router. NextApollo Product Changelogs