You can connect to different VPCs through Peering Connection or Cloud Connect Network (CCN). Please watch the following video to learn more.
Peering Connection
You can establish communication between two VPCs using Peering Connection, which supports both intra-account VPC connections and cross-account VPC connections.
Cloud Connect Network (CCN)
You can establish communication between two or more VPCs using Cloud Connect Network (CCN), which supports both intra-account VPC connections and cross-account VPC connections (CCN also supports interconnection between VPCs and IDCs).