3. How to calculate VPC peering connection with respect to the number of VPC ?
To connect every Virtual Private Cloud (VPC) to every other VPC in a full-mesh network, you calculate the total number of peering connections using the formula \(\frac{n(n-1)}/{2}), where n is the total number of VPCs. Because VPC peering is strictly a one-to-one relationship and does not support transitive routing, each pair of VPCs requires its own dedicated connection