
Istio 1.21: Service Mesh Production Excellence
Istio 1.21 sharpens Ambient Mesh, hardens security, and expands Gateway API support with leaner performance for production meshes.

Istio 1.21 sharpens Ambient Mesh, hardens security, and expands Gateway API support with leaner performance for production meshes.

Istio 1.20 delivers production-ready Ambient Mesh, enhanced security features, improved performance, and expanded Gateway API support for modern service mesh deployments.

Istio 1.19 marks a major milestone with ambient mesh production readiness, enhanced security features, and significant performance improvements for service mesh deployments.

Istio 1.15 advances ambient mesh capabilities, enhances multi-cluster topologies, and delivers improved security policies for production service mesh deployments.

Istio 1.11 improves multi-cluster topologies, enhances security policies, and introduces experimental ambient mesh for sidecar-free workloads.

Istio 1.6 completes the istiod consolidation, refines telemetry v2, and simplifies ingress and upgrade workflows.

Istio 1.4 trims resource usage, simplifies traffic config, and modernizes telemetry pipelines for production meshes.

Istio 1.0 graduates the service mesh to production readiness with stable APIs, security hardening, and Kubernetes-native operations.

Istio 0.1 debuts a full-featured service mesh built on Envoy, Pilot, Mixer and Citadel—bringing traffic management, observability and policy to Kubernetes.