Retirement: Open Service Mesh add-on for AKS will be retired on September 30, 2027

Following the archival of the Open Service Mesh project, the Istio service mesh add-on was released for Azure Kubernetes Service (AKS) and is Generally Available since February 28,2024. 

Due to the upstream archival of open-source Open Service Mesh, the Open Service Mesh add-on for AKS will no longer receive any new minor version releases or new features and will be retired on September 30, 2027. Security patch updates will be provided up until September 30, 2027.

You can continue to use the existing Open Service Mesh add-on for Azure Kubernetes Service (AKS) until September 30, 2027 or transition to Istio add-on for Azure Kubernetes Service (AKS) before that time. Migration guidance from Open Service Mesh (OSM) configurations to Istio can be found here. There are no changes in pricing between the two add-ons.