This video from AWS re:Invent 2023 discusses a new feature called trusted identity propagation that simplifies access control across AWS analytics services. Speakers from Amazon Redshift, IAM Identity Center, and QuickSight explain how this feature enables seamless single sign-on, user-based permissions, and improved auditing capabilities when accessing data through services like Redshift, QuickSight, EMR, and Lake Formation. The presenters demonstrate how trusted identity propagation works to propagate user identities across services, allowing for more granular access controls and end-to-end auditing. They also cover upcoming integrations with additional AWS services to further streamline identity and access management for analytics workloads.