#1. VPC Lattice. This thing is amazing 😍 Imagine exposing your HTTP(S)/gRPC services like PrivateLink, but instead of an ENI it's a link-local address right in your compute - just like how the metadata service works. Features include IAM auth, cross-account, advanced routing.
Gateway Load Balancer is *HUGE* and brings a capability to the cloud that has never even existed in traditional/legacy datacenter networks. It's not "just" ECMP. Flows are symmetrical, and sticky! Let me explain ...