The connection must minimize latency and must maximize throughputWhich solution will meet these requirements?

Explanations:

Using EC2 Dedicated Hosts ensures that instances are physically located on the same hardware, but it does not inherently optimize network performance between instances. Dedicated Hosts are more focused on license management and compliance than on network latency or throughput.

Configuring a placement group for EC2 instances of the same instance type ensures that they are physically located close to each other within the same Availability Zone. This arrangement minimizes latency and maximizes throughput due to reduced network hop counts and improved bandwidth, making it the best solution for high-performance inter-instance communication.

While multiple AWS elastic network interfaces can enhance networking capabilities, linking them via aggregation (which AWS does not support in a traditional sense) may not achieve the required low latency and high throughput. Network performance improvements typically come from placement strategies rather than just increasing the number of interfaces.

AWS PrivateLink provides private connectivity between VPCs and services but does not specifically optimize the network performance between EC2 instances within the same VPC. It is more suitable for accessing AWS services or third-party services privately rather than improving inter-instance communication.