When configuring extensions by using plugins or callouts, you can specify some request and connection attributes to forward to backend services. For more information, see supported attributes.

Google Kubernetes Engine (GKE) Gateway support for using extensions by using callouts to add custom logic into the load balancing processing path is in General Availability. For more information, see GKE extensions.

You can use Service Extensions to implement dynamic forwarding, which helps you map tenants to endpoints programmatically, without having to update your URL maps. This feature is in Preview.

For authorization extensions, in addition to the ext_proc Envoy gRPC API, the ext_authz gRPC API is also supported. This capability allows seamless integration with the broader authorization ecosystem. This feature is in Preview.

Regional external and internal Application Load Balancers support route and traffic extensions using plugins. This feature is in Preview.

Feature

Edge extensions help you manipulate request headers early in the processing lifecycle of global external Application Load Balancers to influence caching and routing decisions. This feature is in General Availability.

Cloud Load Balancing callouts have full duplex streaming support.

Authorization extensions help you configure Cloud Load Balancing authorization policies to use custom authorization engines. This feature is in General Availability.

To protect AI workloads, you can configure traffic extensions to call the Model Armor service on supported Application Load Balancers. This feature is in General Availability.

To upload your Wasm plugin code to Artifact Registry, you can use generic format repositories, in addition to Docker repositories. This feature is in Preview.

Plugins for Cloud Load Balancing help you insert WebAssembly (Wasm) code in a fully managed serverless environment directly into the data path of most Cloud Load Balancing Application Load Balancers. This feature is in General Availability.

Edge extensions help you manipulate request headers early in the request processing lifecycle of global external Application Load Balancers to influence caching and routing decisions. This feature is in Preview.

Learn how to configure an edge extension.

The Google Kubernetes Engine (GKE) Gateway supports using extensions to add custom logic into the load balancing processing path. For more information, see GKE extensions. This feature is in Preview.

Feature

You can configure Model Armor with Service Extensions to protect AI workloads on supported Application Load Balancers. For more information, see Callouts to Google services. This feature is in Preview.

Service Extensions plugins support Go-compiled Wasm, in addition to Rust and C++. For more information, see Prepare the plugin code.

Service Extensions plugins help you insert WebAssembly (Wasm) plugins in a fully managed serverless environment directly into the data path of most Cloud Load Balancing Application Load Balancers. This feature is in Preview.

For details, see Plugins for Cloud Load Balancing.

Authorization extensions help you configure Cloud Load Balancing authorization policies to use custom authorization engines. This feature is in Preview.

Feature

You can now also host an extension on a backend service that uses serverless NEGs pointing to Cloud Run services. For more information, see Supported backends for extension services.

Service Extensions is Generally Available for callout extensions for most Google Cloud Application Load Balancers.

You can also configure Cloud Load Balancing user-managed callout extensions by using the Console.

Service Extensions callouts are available for Google Cloud Application Load Balancers, excluding Classic.

With the introduction of this feature, users instruct load balancers to forward traffic from within the Cloud Load Balancing data processing path through gRPC to user-managed or partner-hosted applications. These applications can apply various policies or functions, such as header or payload manipulation, security screening, or custom logging on the traffic before returning the traffic to the load balancer for further processing.

For details, see Cloud Load Balancing callouts overview.

Initial release of Service Extensions.

Service Extensions helps you insert plugins inline in the Media CDN data path. You build these plugins by using WebAssembly (Wasm) and Proxy-Wasm ABI.

This product is in Preview.