Networking:
- Transit gateway multicast
- Transit gateway inter regions peering
- VPC ingress routing (good for bump-in-the-wire/in-line designs)
- Routing domains concept also very good if we leverage properly , will be more benefited for hybrid connectivity models.
- Direct GW can connect upto three transit GW’s
- AWS transit GW manager
- VPC Route table hold upto 1000 routes
- Transit GW holds upto 5000 routes
- Certification based authentication for VPN
- Traffic mirroring (similar to span)
- VPN connectivity , with ECMP scale upto 50g with transit GW
- New partner connection speeds 1,2,5 and 10g
- Client- site vpn supports split tunneling
- VPC endpoint interface services increased and introduced policies
- 41 services supported on aws private link
- Aws outposts enhancements( infra and services) on- prem
- Aws local zones(avail in LA)
- AWS accelerated site-site VPN
Key Notes:
- Hypervisor with nitro system
- Nitro enclaves
- Chip innovations – Amazon graviton 2 -processors
- M6g, r6g, c6g (64 vcpu, 25 gps networking
- 40% over rice/performance over intel
- Inf1 instance
- 84% of kubernetes runs on aws cloud
- Amazon fargate for amazon eks
Simple Reference Architecture with New feature

For more info., please go through below URL which has very good data.