Buoyant Enterprise for Linkerd vs Tetrate Service Bridge

Buoyant Enterprise for Linkerd (BEL) is Buoyant’s enterprise distribution of Linkerd, a service mesh for Kubernetes. It encrypts meshed traffic with mutual TLS and offers latency-based load balancing, timeouts, retries, circuit breaking, gRPC load balancing and blue-green or canary deployments. It supports communication across clusters, federated services and automatic cross-cluster failover. Observability includes layer 7 success-rate and latency metrics, Prometheus-compatible metric exports and OpenTelemetry tracing. High Availability Zone-aware Load Balancing keeps requests in-zone under normal load and sends them to other zones when local endpoints are overloaded or return errors. Supported environments include Kubernetes and managed or self-hosted distributions such as Amazon EKS, Google GKE, Microsoft Azure AKS, Oracle OKE, Rancher RKE2 and Red Hat OpenShift. Linux VM workloads are supported in Premium and Strategic; the product also describes management of non-Kubernetes workloads including Windows VMs. It is free to try, and companies with fewer than 50 employees can use it in production at any scale. Premium and Strategic pricing is available by request.

Tetrate Service Bridge is a paid, hybrid service mesh and control plane for connecting, monitoring, and securing microservices. Built on Istio, it centralizes Istio and Envoy configuration and visibility across Kubernetes and traditional compute clusters, including application edges, cluster ingress, and links between workloads. A global management plane spans multi-cluster hybrid environments. Security controls include end-to-end mTLS, certificate management, identity-aware authorization, role-based access control, tenant isolation, and zero-trust policies with auditability. Traffic features cover global routing, circuit breaking, locality-aware failover, canary releases, traffic shifting, and blue-green deployments. Unified metrics, distributed tracing, topology views, service inventory, dashboards, and alerts provide observability. Tetrate lists support for Kubernetes, AWS EKS, Azure AKS, and Google GCP, plus integrations and partners across major cloud and infrastructure providers. The management plane may be hosted by Tetrate or deployed in customer Kubernetes infrastructure. Self-managed installation requires Kubernetes and several supporting services. Pricing is on request; no free plan is listed.