Placement Groups in Amazon EC2 allow you to influence the placement of instances within the underlying hardware of the AWS infrastructure. They are specifically designed to provide low-latency networking among instances within the same placement group.
By placing instances in a placement group, you can ensure that they are physically close to each other within the data center, reducing network latency and improving inter-node communication. This is particularly important for compute clusters that require high-performance and low-latency communication between nodes.
While other options like EC2 Dedicated Instances, AWS Direct Connect, VPC private, and Multiple Availability Zones may have their own benefits and use cases, Placement Groups are specifically designed to optimize the performance of compute clusters requiring low inter-node latency.
Placement Groups are a feature in AWS that enable you to group instances within the same Availability Zone to ensure low-latency network communication.
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