SAA-C03 Question 466
Select 3A company is running a monolithic application on a fleet of EC2 instances, but they are experiencing high operational overhead and uneven utilization of compute resources during traffic spikes. They want to improve scalability and reduce costs by migrating to a more optimized architecture. Which combination of solutions would best address their requirements?
- A
Migrate the application to AWS Lambda functions and use Amazon API Gateway to manage incoming requests
- B
Containerize the application and deploy it to Amazon ECS with AWS Fargate as the launch type
- C
Use EC2 Auto Scaling with a larger instance size to handle traffic spikes
- D
Break the monolithic application into microservices and deploy them on Amazon Elastic Kubernetes Service (EKS)
- E
Migrate to Amazon Lightsail to simplify the infrastructure management
Show answer and explanation
Correct answers: A, B, D
Explanation
To optimize compute utilization, the company should prioritize serverless computing, containerization, and microservices architecture. AWS Lambda with Amazon API Gateway provides a fully managed serverless solution. Amazon ECS with AWS Fargate allows running containers without managing server infrastructure. Breaking the application into microservices and using Amazon EKS ensures modularity and scalability. Solutions like EC2 Auto Scaling with larger instances or Amazon Lightsail are less effective for the stated requirements.
- A. Correct.
Correct: Migrating to AWS Lambda and Amazon API Gateway is a serverless solution that allows the company to pay only for the compute time used, improving scalability and reducing operational overhead.
- B. Correct.
Correct: Containerizing the application and deploying it to Amazon ECS with AWS Fargate allows the company to run the application without managing servers, optimizing compute resource utilization and scaling automatically.
- C. Incorrect.
Incorrect: While EC2 Auto Scaling can handle traffic spikes, using larger instance sizes does not optimize resource utilization effectively and may lead to higher costs and operational overhead.
- D. Correct.
Correct: Breaking the monolithic application into microservices and deploying them on Amazon EKS enables better scalability and fault isolation, which aligns with the company’s goal of improving scalability and reducing costs.
- E. Incorrect.
Incorrect: Amazon Lightsail is a simplified service for small-scale applications, and it is not designed for highly scalable or optimized architectures needed for large-scale applications.