AWS App Mesh vs Istio
AWS App Mesh
aws.amazon.com
Istio
istio.ioSide by side
| Figure | AWS App Mesh | Istio |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | — |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | — | Yes |
| Plans published | 2 | 1 |
| Spec score · Service Mesh Platforms | 9.1 (#1) | 7.8 (#8) |
| Integrations | The feature page lists Amazon CloudWatch and AWS X-Ray, along with partner and open source tools including Datadog, HashiCorp, and Sysdig. | Istio’s integration documentation covers cert-manager, Grafana, Jaeger, Kiali, Prometheus, SPIRE, Apache SkyWalking, Zipkin, and third-party load balancers. |
| Observability | App Mesh collects service metrics, logs and traces and integrates with Amazon CloudWatch and AWS X-Ray. | Istio can generate metrics, logs, and traces for traffic in a cluster, including ingress and egress traffic. |
| Security | AWS App Mesh API clients must support TLS 1.2, and AWS recommends TLS 1.3. | Istio security features include workload identity, mutual TLS, authentication, authorization policies, and audit tools. |
| What it does | AWS App Mesh is a managed service mesh that standardizes microservice communication and provides visibility and traffic controls through lightweight proxies. | Istio is an open source service mesh that adds ways to secure, connect, and monitor distributed applications with few or no service code changes. |
Plans
In their own words
AWS App Mesh
AWS App Mesh is a managed service for visibility and traffic control between services. It uses the open source Envoy proxy to handle traffic into and out of service containers, and can change routes between services without application-code changes. Proxies balance client traffic and adjust endpoints using health checks and service registration. App Mesh provides metrics and logs for service hops, and can collect traces to help visualize service API calls. It works with AWS Fargate, Amazon ECS, Amazon EKS, Amazon EC2 and Kubernetes on EC2. Mutual TLS verifies service identities using certificates from AWS Certificate Manager Private Certificate Authority or a customer-managed certificate authority. Listed integrations include Amazon CloudWatch and AWS X-Ray, plus tools such as Datadog, HashiCorp and Sysdig. There is no additional charge for App Mesh itself, but proxy-consumed AWS resources are billed separately. AWS states support ends on September 30, 2026; after that, the console and App Mesh resources will no longer be accessible. API clients must support TLS 1.2; AWS recommends TLS 1.3.
Istio
Istio is a free, open-source service mesh that adds security, connectivity, and monitoring for distributed applications with few or no service-code changes. It manages HTTP, gRPC, WebSocket, and TCP traffic, with automatic load balancing, routing rules, retries, failovers, and fault injection. Deployment options include sidecar mode and ambient mode, which uses a per-node Layer 4 proxy and can optionally add a per-namespace Envoy proxy for Layer 7 features. The control plane runs on Kubernetes, while the mesh can extend to other clusters, virtual machines, and endpoints outside Kubernetes. Security capabilities include workload identity, mutual TLS, authentication, authorization policies, and audit tools. Istio can generate traffic metrics, logs, and traces, including for ingress and egress. It can be installed with istioctl or Helm, and its integrations documentation covers tools such as Prometheus, Grafana, Jaeger, Kiali, and cert-manager. Istio 1.31 supports Kubernetes versions 1.32 through 1.36. Supported releases receive critical-issue patches and technical assistance from the community; development builds have no support.