Contents：
You can connect different VPC instances through peering connections or a CCN.
Peering Connections
You can establish peering connections to interconnect two VPC instances under the same or different accounts.
- Creating a peering connection for intra-account VPC communication
- Creating a peering connection for cross-account VPC communication
CCNs
You can use a CCN to interconnect two or more VPC instances. A CCN supports interconnection between VPC instances under the same or different accounts and interconnection between VPC instances and IDCs.
