Istio Beyond Kubernetes
summary
Istio is used in production to join Kubernetes, VMs and bare metal by combining Envoy gateways, a shared internal CA, and Istio CRDs to represent non‑Kubernetes workloads; legacy service records (Zookeeper or cloud map) sync into Kubernetes as service entries or are replaced by auto registration and workload entries/workload groups. Fine‑grain Envoy load balancing cuts Kafka connection bloat—Kafka footprint drops to one sixth—and DNS proxy plus centralized config distribution via existing CD systems lets multi‑site meshes operate reliably.
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