The company is experiencing sudden demand increases and must provision large Amazon EC2 instances from an AMI in an Auto Scaling group. The solution must provide minimum initialization latency to meet demand. Which solution meets these requirements?
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Correct answer: Enable Amazon Elastic Block Store (Amazon EBS) fast snapshot restore on a snapshot. Provision an AMI by using the snapshot. Replace the AMI in the Auto Scaling group with the new AMI..
Why this is the answer
Enabling Amazon EBS fast snapshot restore significantly reduces the time it takes to initialize data from a snapshot for EBS volumes, which are the root volumes for EC2 instances. This directly addresses the requirement for minimum initialization latency when provisioning large EC2 instances from an AMI. Provisioning an AMI from this optimized snapshot ensures that new instances launched by the Auto Scaling group start up quickly. The other options either do not directly address initialization latency (like aws ec2 register-image or Amazon DLM) or are not the most direct and effective solution for this specific problem (like using EventBridge with AWS Backup lifecycle policies for AMI provisioning).
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