AWS Certified Solutions Architect - Associate
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A company operates an application using Amazon EC2 and AWS Lambda within a VPC configured with both public and private subnets. EC2 instances are placed in a private subnet, necessitating direct network access by Lambda functions for application operation. The company plans for a 1-year application runtime with an expanding Lambda function count. They seek a solution to optimize costs and reduce latency. Which approach should be adopted?
Explanation:
The correct answer is C. A Compute Savings Plan is more flexible than an EC2 Instance Savings Plan because it covers both EC2 and Lambda usage, allowing the company to save on all application resources as the number of Lambda functions increases. Connecting the Lambda functions to the private subnet that contains the EC2 instances ensures low network latency, meeting the company's performance goals. Therefore, Option C maximizes savings and optimizes network performance.