{
  "slug": "azure-aks-open-service-mesh-add-on-retirement",
  "title": "Azure Kubernetes Service: Open Service Mesh add-on retirement",
  "summary": "Retirement date for the Open Service Mesh add-on for Azure Kubernetes Service (AKS): 30 Sep 2027. Security patch updates end on that date. The add-on receives no new minor versions or features.",
  "cloud": "azure",
  "service": "Azure Kubernetes Service",
  "service_slug": "aks",
  "category": "feature",
  "type": "retirement",
  "announced_date": "2024-09-26",
  "effective_date": "2027-09-30",
  "effective_precision": "day",
  "impact": "The Open Service Mesh add-on for AKS is retired on 30 Sep 2027, following the upstream archival of the open-source Open Service Mesh project. The add-on no longer receives new minor version releases or new features. Security patch updates end on the retirement date. Microsoft states that the existing add-on can continue to be used until the retirement date, and that there are no changes in pricing between the Open Service Mesh add-on and the Istio add-on.",
  "migration_path": "1. Continue to use the existing Open Service Mesh add-on until the retirement date, or transition to the Istio add-on for Azure Kubernetes Service (AKS) before that time.\n2. Use the Microsoft [migration guidance from Open Service Mesh (OSM) configurations to Istio](https://go.microsoft.com/fwlink/?linkid=2286684).",
  "replacement": "Istio add-on for Azure Kubernetes Service (AKS)",
  "affected_versions": [],
  "source_url": "https://azure.microsoft.com/updates?id=open-service-mesh-add-on-for-aks-will-be-retired-on-september-30-2027",
  "extra_source_urls": [
    "https://azure.microsoft.com/en-us/updates/ga-istiobased-service-mesh-addon-for-azure-kubernetes-service/"
  ],
  "vendor_ref": "open-service-mesh-add-on-for-aks-will-be-retired-on-september-30-2027",
  "last_checked_at": "2026-11-12T09:55:19.345Z",
  "created_at": "2026-11-13T13:36:44.208Z",
  "updated_at": "2026-11-13T13:36:44.208Z",
  "url": "https://eolwatch.dev/items/azure-aks-open-service-mesh-add-on-retirement",
  "short_url": "https://eolwatch.dev/i/7t",
  "markdown_url": "https://eolwatch.dev/items/azure-aks-open-service-mesh-add-on-retirement.md",
  "json_url": "https://eolwatch.dev/items/azure-aks-open-service-mesh-add-on-retirement.json",
  "estate_check": {
    "resource_types": [
      "azurerm_kubernetes_cluster"
    ],
    "fields": [
      "open_service_mesh_enabled"
    ],
    "inputs": [
      "Terraform state or plan (JSON)"
    ]
  }
}