https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 16 May 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-05-16-service-mesh-2026-istio-ambient-linkerd-3-cilium-mesh-consul-connect-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-service-mesh-2026-istio-ambient-linkerd-3-cilium-mesh-consul-connect-deep-dive.en Service mesh went through a turbulent 2024-2026 after the sidecar golden age of 2018-2020. Istio Ambient went GA, making sidecar-free Istio real. Linkerd 3 moved some features to a paid edition, sparking community controversy. Cilium (with Isovalent) was acquired by Cisco, accelerating eBPF mesh. HashiCorp was acquired by IBM, leaving Consul Connect governance uncertain. Meanwhile Microsoft sunset Open Service Mesh in January 2024, and AWS sunset App Mesh in October 2024. This is a 2026 comparison of the survivors — Istio (Ambient + sidecar), Linkerd 3, Cilium Service Mesh, Consul Connect, Kuma (Kong), Gloo Mesh (solo.io), Traefik Mesh — covering the sidecar vs ambient vs proxyless debate, the four operational patterns (mTLS, RBAC, traffic shifting, observability), case studies from Toss, Kakao, Mercari, Cybozu, and a decision tree for who should pick what. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) service-meshistiolinkerdciliumconsulkumagloo-meshtraefik-meshsidecarambientztunnelwaypointmtlsenvoy2026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-16-service-mesh-2026-istio-ambient-linkerd-3-cilium-mesh-consul-connect-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-service-mesh-2026-istio-ambient-linkerd-3-cilium-mesh-consul-connect-deep-dive.ja サービスメッシュは2018-2020年のサイドカー黄金期を経て、2024-2026年に激しい再編を迎えた。Istio Ambient が GA となりサイドカーレス Istio が現実になり、Linkerd 3 は一部機能を有料エディションに移して論争を起こし、Cilium は Isovalent とともに Cisco に買収されて eBPF メッシュを加速し、HashiCorp は IBM に買収されて Consul Connect のガバナンスが不透明になった。同時に Microsoft は Open Service Mesh を 2024年1月に sunset し、AWS は App Mesh を 2024年10月に sunset した。生き残った選択肢 — Istio(Ambient + sidecar)、Linkerd 3、Cilium Service Mesh、Consul Connect、Kuma(Kong)、Gloo Mesh(solo.io)、Traefik Mesh — を 2026年の視点で比較する。サイドカー vs ambient vs proxyless 論争、mTLS / RBAC / トラフィックシフト / 可観測性のパターン、Toss・Kakao・メルカリ・サイボウズの事例、そして誰が何を選ぶべきかまで。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) service-meshistiolinkerdciliumconsulkumagloo-meshtraefik-meshsidecarambientztunnelwaypointmtlsenvoy2026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-16-service-mesh-2026-istio-ambient-linkerd-3-cilium-mesh-consul-connect-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-service-mesh-2026-istio-ambient-linkerd-3-cilium-mesh-consul-connect-deep-dive 서비스 메시는 2018-2020년의 사이드카 황금기를 지나, 2024-2026년에 격렬한 재편을 겪었다. Istio Ambient가 GA 되면서 sidecar-free Istio가 가능해졌고, Linkerd 3는 일부 기능을 유료화하며 커뮤니티 논란을 일으켰고, Cilium은 Isovalent와 함께 Cisco에 인수되어 eBPF mesh를 가속했고, HashiCorp는 IBM으로 인수되어 Consul Connect의 미래가 불투명해졌다. 동시에 Microsoft는 Open Service Mesh를 2024년 1월에 sunset, AWS는 App Mesh를 2024년 10월에 sunset 했다. 살아남은 옵션 — Istio(Ambient + sidecar), Linkerd 3, Cilium Service Mesh, Consul Connect, Kuma(Kong), Gloo Mesh(solo.io), Traefik Mesh — 를 2026년의 시선으로 비교한다. 사이드카·ambient·proxyless 논쟁, mTLS / RBAC / traffic shifting / 관찰성 패턴, 토스·카카오·Mercari·Cybozu 사례, 그리고 누가 무엇을 골라야 하는지까지. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) service-meshistiolinkerdciliumconsulkumagloo-meshtraefik-meshsidecarambientztunnelwaypointmtlsenvoy2026deep-dive