Virtual Private Cloud - Isolated tenant containing IP address range, network segment, route tables and gateway. NAT Gateway - Allows Alibaba ECS instances to be source NAT'd with public IP to communicate on Internet. Cloud Enterprise Network VPN Gateway Express Connect Smart Access Gateway Alibaba Cloud PrivateZone PrivateLink Network Intelligence Services (NIS) Global Traffic Manager CDN and Edge Alibaba Cloud CDN Secure Content Delivery Dynamic CDN Edge Node Service (ENS) Global Accelerator