An Australian ecommerce company, hosting all its services in the AWS Cloud, aims to expand its customer base to the western United States (US). The company’s current AWS architecture includes four AWS accounts with multiple VPCs in the ap-southeast-2 Region, all connected to a transit gateway in ap-southeast-2. Dedicated VPCs are used for each application service, along with centralized VPCs for security features like proxies, firewalls, and logging.

The company intends to replicate this infrastructure from ap-southeast-2 to the us-west-1 Region. A network engineer needs to establish connectivity between the applications in the two Regions while maximizing bandwidth, minimizing latency, and reducing operational overhead.

What solution will fulfill these requirements?