SAA-C03 Question 95
Select 3A media company is migrating its video streaming application to AWS. The application requires high availability, low latency, and the ability to handle unpredictable spikes in traffic. Which combination of AWS services and features should be implemented to meet these requirements?
- A
Use Amazon CloudFront with an S3 bucket as the origin to deliver content globally with low latency.
- B
Deploy the application on a single EC2 instance with an Elastic IP to ensure high availability.
- C
Use Application Load Balancer (ALB) in front of an Auto Scaling group of EC2 instances to handle traffic spikes.
- D
Enable AWS Global Accelerator to improve performance and availability for global users.
- E
Store user session data in Amazon RDS to reduce application latency during peak traffic.
Show answer and explanation
Correct answers: A, C, D
Explanation
To meet the application's requirements for high availability, low latency, and the ability to handle traffic spikes, a combination of Amazon CloudFront for content delivery, Application Load Balancer with Auto Scaling for traffic management, and AWS Global Accelerator for global performance improvements is ideal. These services work together to ensure the application is resilient, responsive, and scalable.
- A. Correct.
Amazon CloudFront is a Content Delivery Network (CDN) service that helps deliver content globally with low latency, meeting the requirement for low latency.
- B. Incorrect.
Deploying the application on a single EC2 instance does not provide high availability, as it introduces a single point of failure.
- C. Correct.
Using an Application Load Balancer (ALB) with an Auto Scaling group ensures that the application can handle unpredictable spikes in traffic and maintains high availability.
- D. Correct.
AWS Global Accelerator provides improved performance and availability for global users, which complements the application's requirement for high availability and low latency.
- E. Incorrect.
Storing user session data in Amazon RDS is not ideal for reducing latency during peak traffic as RDS is better suited for structured relational data rather than session management. Using a service like DynamoDB or ElastiCache would be more appropriate.