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Answer: Acquire an EC2 Instance Savings Plan for the EC2 instances, a Compute Savings Plan for Lambda to cover the anticipated minimal usage of the Lambda functions, and reserved nodes for the MemoryDB cache nodes.
The correct answer is A. A comprehensive approach to minimizing costs must take into account the unique pricing structures for different AWS services. For Amazon EC2 instances, which experience a consistent load, an EC2 Instance Savings Plan is suitable as it offers significant cost savings. For AWS Lambda functions, a Compute Savings Plan can provide cost reductions and caters well to the variability and unpredictability of Lambda usage. Finally, for Amazon MemoryDB for Redis, purchasing reserved nodes is the optimal way to reduce expenses. Options B and D are incorrect because reserved concurrency for Lambda does not contribute to cost savings and is more about performance management. Option C is not as optimal as option A because Compute Savings Plans do not cover the costs for MemoryDB reserved nodes.
Author: LeetQuiz Editorial Team
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A company operates an application on Amazon EC2 instances and AWS Lambda functions, where the EC2 instances handle a consistent workload and the Lambda functions face fluctuating and unpredictable demands. The application incorporates a caching mechanism using an Amazon MemoryDB for Redis cluster. A solutions architect is tasked with suggesting a cost-effective solution to reduce the company's monthly expenses. Which of the following solutions would effectively meet this requirement?
A
Acquire an EC2 Instance Savings Plan for the EC2 instances, a Compute Savings Plan for Lambda to cover the anticipated minimal usage of the Lambda functions, and reserved nodes for the MemoryDB cache nodes.
B
Opt for a Compute Savings Plan for the EC2 instances, set up Lambda reserved concurrency to manage the expected Lambda function usage, and reserve nodes for the MemoryDB cache nodes.
C
Implement a Compute Savings Plan to encompass the total anticipated costs of the EC2 instances, Lambda functions, and MemoryDB cache nodes.
D
Choose a Compute Savings Plan for the EC2 instances and the MemoryDB cache nodes, and configure Lambda reserved concurrency to handle the expected Lambda function usage.
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