Amazon Managed Grafana currently integrates only with the organization instance of IAM Identity Center; account-level Identity Center instances aren't supported. In a large AWS organization, each member account may belong to a separate team or client with its own access boundaries, so using one centralized identity directory isn't ideal. Is there a technical or architectural reason account instances aren't supported? Without that option, teams may need to run an external identity provider such as Keycloak.
1 Answer
There doesn’t appear to be a documented explanation beyond this being a product limitation. The organization instance is designed for centralized identity and access management across accounts, and Managed Grafana may depend on that integration model. Unfortunately, knowing the rationale wouldn’t provide a workaround—your practical choices are to use the organization-wide instance or integrate Grafana with another supported identity provider, such as a self-hosted solution.

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