Azure Kubernetes Service (AKS) can be configured to use Azure Active Directory (AD) for user authentication. In this configuration, you sign in to an AKS cluster using an Azure AD authentication token. Once authenticated, you can use the built-in Kubernetes role-based access control (Kubernetes RBAC) to manage access to namespaces and cluster resources based on a user's identity or group membership.
There is definetely an option for this kind of scenario so explore the RBAC model and you can apply the namespace access to only specified users as per the requirements.
manage-azure-rbac
concepts-identity
Hope this helps.
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