Which solution will meet these requirements?
Configure multiple AWS Direct Connect (DX) 10 Gbps dedicated connections from a DX partner for each on-premises location. Create private virtual interfaces on each connection for each AWS account VPC. Associate the private virtual interface with a virtual private gateway attached to each VPC.
Configure multiple AWS Direct Connect (DX) 10 Gbps dedicated connections from two DX partners for each on-premises location. Create and attach a virtual private gateway for each AWS account VPC. Create a DX gateway in a central network account and associate it with the virtual private gateways. Create a public virtual interface on each DX connection and associate the interface with the DX gateway.
Configure multiple AWS Direct Connect (DX) 10 Gbps dedicated connections from two DX partners for each on-premises location. Create a transit gateway and a DX gateway in a central network account. Create a transit virtual interface for each DX interface and associate them with the DX gateway. Create a gateway association between the DX gateway and the transit gateway.
Configure multiple AWS Direct Connect (DX) 10 Gbps dedicated connections from a DX partner for each on-premises location. Create and attach a virtual private gateway for each AWS account VPC. Create a transit gateway in a central network account and associate it with the virtual private gateways. Create a transit virtual interface on each DX connection and attach the interface to the transit gateway.
Explanations:
This option uses multiple 10 Gbps dedicated connections, which is valid; however, it only configures private virtual interfaces and does not utilize a central network account with a transit gateway for efficient routing and scaling across multiple accounts. Thus, it may complicate the connectivity between different VPCs.
While it employs multiple 10 Gbps connections and a DX gateway, it only sets up public virtual interfaces, which are typically used for public services rather than private connectivity to VPCs. This does not meet the requirement for maintaining a private and secure connection to the legacy system across all VPCs.
This solution efficiently combines multiple DX connections and implements a transit gateway for seamless connectivity across all AWS accounts. The use of a DX gateway allows for proper management of bandwidth and ensures high availability and redundancy while meeting the 5 Gbps bandwidth requirement.
Although it utilizes multiple DX connections and involves a transit gateway, it lacks the use of a DX gateway for centralized management of connections. This setup may not provide the same level of efficiency or failover capabilities as option C, especially in a multi-account environment.
I believe the answer is:
Configure multiple AWS Direct Connect (DX) 10 Gbps dedicated connections from two DX partners for each on-premises location. Create a transit gateway and a DX gateway in a central network account. Create a transit virtual interface for each DX interface and associate them with the DX gateway. Create a gateway association between the DX gateway and the transit gateway.