
Fusion 16.5: The Gateway for Everyone
Built with C# and .NET, Fusion 16.5 is the only gateway supporting both federation standards, achieves 100% Apollo Federation compliance, and leads in real-world performance.


Built with C# and .NET, Fusion 16.5 is the only gateway supporting both federation standards, achieves 100% Apollo Federation compliance, and leads in real-world performance.

Federated Event Streams add broker-backed, resumable GraphQL subscriptions to Fusion 16.4, with stateless gateway scaling and client-owned resume cursors.

Fusion 16 is a GraphQL federation gateway built on ASP.NET Core, featuring Aspire-driven composition, incremental delivery, Semantic Introspection, OpenAPI adapters, and connectors for REST and gRPC.

Hot Chocolate 16 brings a new type system, better scalar contracts, safer defaults, improved batching, semantic introspection, and a new GraphQL error mode.

Hot Chocolate 15 updates the type system and supported .NET versions, and adds new projection, filtering, sorting, pagination, and DataLoader capabilities.

Hot Chocolate 14 introduces simpler dependency injection, query inspection, source-generated DataLoaders, pagination improvements, and stronger security.

Together, we'll explore the new GraphQL-Fusion, the open approach towards distributed GraphQL.

Hot Chocolate 13 improves GraphQL over HTTP, developer experience, authorization, subscriptions, data access, performance, and Strawberry Shake.

Hot Chocolate 12.5 adds Banana Cake Pop themes, OpenTelemetry instrumentation, oneOf input objects, and client-controlled nullability.