A solutions architect is designing an architecture for a new application that requires low network latency and high network throughput between Amazon EC2 instances. Which component should be included in the architectural design?
A.
An Auto Scaling group with Spot Instance types.
B.
A placement group using a cluster placement strategy.
C.
A placement group using a partition placement strategy.
D.
An Auto Scaling group with On-Demand instance types.
Answer is B
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html:
"Cluster – packs instances close together inside an Availability Zone. This strategy enables workloads to achieve the low-latency network performance necessary for tightly-coupled node-to-node communication that is typical of HPC applications."
AWS and Spot Instances are popular in the ad tech industry, which is a great example of customers running business-critical web applications. Their workloads require a high request rate, low latency, and support for spiky traffic rates throughout the day in real-time bidding and similar applications.
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