Hi everyone,
We're currently rolling this out and you should be able to access this feature by the end of March 2025. Please see more in this post community post here

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Update from Nov 2024

The ability to sync Atlassian Teams from an identity provider is currently in progress. Once this feature is available, admins will be able to create Atlassian Teams that have their membership managed only through groups synced from your identity provider directory via SCIM.

We will update our Cloud roadmap when we have more information on the timeline for this feature.