A marketing company utilizes a hybrid infrastructure with AWS Direct Connect links and an SD-WAN overlay to connect its branch offices. Multiple VPCs are connected to a third-party SD-WAN appliance transit VPC within the same account using AWS Site-to-Site VPNs. The company plans to add more VPCs to the SD-WAN appliance transit VPC but faces scalability issues, route table limitations, and increased costs with the current setup. What solution should a network engineer implement to address these challenges, reduce dependencies, and minimize operational overhead? | AWS Certified Advanced Networking - Specialty Quiz