Istio Major Version History

Istio Major Version History A workflow diagram generated by Archify. 01 / 2017–2019 02 / 2020–2021 03 / 2022–2023 04 / 2024–2025 Istio 0.1 · Announced · 2017-05 · 2017–2019 Istio 0.1 Announced · 2017-05 Istio 1.0 · Production GA · 2018-07 · 2017–2019 Istio 1.0 Production GA · 2018-07 Istio 1.1 · Performance · 2019-03 · 2017–2019 Istio 1.1 Performance · 2019-03 Istio 1.5 · istiod consolidation · 2020-03 · 2020–2021 Istio 1.5 istiod consolidation · 2020-03 Istio 1.10 · Discovery Selectors · 2021-05 · 2020–2021 Istio 1.10 Discovery Selectors · 2021-05 Istio 1.13 · Gateway API · 2022-02 · 2022–2023 Istio 1.13 Gateway API · 2022-02 Istio 1.18 · Ambient Alpha · 2023-06 · 2022–2023 Istio 1.18 Ambient Alpha · 2023-06 Istio 1.22 · Stability · 2024-05 · 2024–2025 Istio 1.22 Stability · 2024-05 Istio 1.28 · Current version · 2025-11 · 2024–2025 Istio 1.28 Current version · 2025-11 Legend Release Milestone

1.5 turning point: istiod consolidation

  • • Four components — Mixer, Pilot, Citadel, Galley — consolidated into the single istiod binary
  • • Mixer removed completely; its functionality moved into Envoy
  • • Reduced complexity, 50% latency reduction from removing Mixer, simpler operations