On September 24, 2026, AWS announced an enhanced custom event bus in Amazon EventBridge: one centralized bus shared across every account in an AWS organization, with ordering guarantees, a Subscriber resource, and a new ingress/egress pricing model. For a multi-account platform still juggling cross-account rules, the workaround is officially over.

AWS extends Amazon EBS Volume Clones to copy volumes across accounts, with optional re-encryption in the destination account. Multi-account teams can now refresh test environments with current production data, provided they work within the encryption and Availability Zone constraints.