AWS Certified Solutions Architect – Associate (SAA-C02) — Question 491
A company runs a containerized application on a Kubernetes cluster in an on-premises data center. The company is using a MongoDB database for data storage.
The company wants to migrate some of these environments to AWS, but no code changes or deployment method changes are possible at this time. The company needs a solution that minimizes operational overhead.
Which solution meets these requirements?
Answer options
- A. Use Amazon Elastic Container Service (Amazon ECS) with Amazon EC2 worker nodes for compute and MongoDB on EC2 for data storage.
- B. Use Amazon Elastic Container Service (Amazon ECS) with AWS Fargate for compute and Amazon DynamoDB for data storage.
- C. Use Amazon Elastic Kubernetes Service (Amazon EKS) with Amazon EC2 worker nodes for compute and Amazon DynamoDB for data storage.
- D. Use Amazon Elastic Kubernetes Service (Amazon EKS) with AWS Fargate for compute and Amazon DocumentDB (with MongoDB compatibility) for data storage.
Correct answer: D
Explanation
To avoid code and deployment changes, the company must continue using Kubernetes and a MongoDB-compatible database, which makes Amazon EKS and Amazon DocumentDB the appropriate choices. Using AWS Fargate with EKS eliminates the operational overhead of managing EC2 worker nodes, whereas DynamoDB or ECS would require code and deployment configuration changes. Therefore, Option D is the only solution that satisfies all constraints while minimizing administrative effort.