Global VPC
Global VPC is a "global" resource without "region" attribute, and VPC networks belonging to global VPC can communicate with each other.
Infrastructure
The network infrastructure is mainly used to provide IP address resources for servers, hosts and so on. It mainly includes global VPC, VPC, L2 Network, IP subnet, reserved IP.
VPC
A Proprietary Network VPC is a logically isolated piece of network space.
L2 Network
L2 Network corresponds to a L2 Network in the physical network, and has the role of network isolation.
IP Subnets
IP subnets are used to provide IP addresses for servers, hosts, and other resources.