Requirement: Establish connectivity between the on-premise data center and AWS data center using IPSec tunneling. Solution: We are creating IPSec Tunneling between two VPC in a different account and the different region as we don’t have on-premise data center. Steps to achieve this. 1. Create VPC A with CIDR Range 10.100.0.0/16 in First account. 2. Create Subnet A in VPC A with range 10.100.1.0/24 3. Create Internet Gateway and attach to VPC A. 4. Add the Route (0.0.0.0/0) in default Route Table and target to Internet Gateway. 5. Create VPC B with CIDR Range 10.200.0.0/16 in Second account. 6. Create Subnet B in VPC B with range 10.200.1.0/24 7. Create Internet Gateway and attach ...