In order to optimize performance for a compute cluster that requires low inter-node latency, which feature in the following list should you use?

Explanations:

AWS Direct Connect provides a dedicated network connection between on-premises data centers and AWS, which helps with bandwidth and network reliability but does not directly optimize for low inter-node latency within a compute cluster.

Placement Groups optimize the network latency between EC2 instances by placing them in close proximity to one another, reducing inter-node latency. This is specifically designed for applications that require low latency, such as high-performance computing.

VPC private subnets isolate EC2 instances from the public internet, but they do not specifically address the inter-node latency within the cluster. This is more about security and traffic routing than optimizing network latency.

EC2 Dedicated Instances are physical EC2 instances that run on hardware dedicated to a single customer, but this feature does not reduce inter-node latency between instances within a cluster.

Multiple Availability Zones provide redundancy and fault tolerance, but they do not reduce inter-node latency. In fact, running instances across multiple AZs can increase latency due to the physical distance between AZs.