SAP-C02 Question 266
Select 3Your company operates an application that serves customers globally with low latency requirements. To achieve this, you need to architect the application to leverage AWS's Global Infrastructure. Which combination of AWS services and features would be most suitable for ensuring low latency and high availability for your global users?
- A
Use AWS Global Accelerator to route user traffic to the nearest healthy endpoint.
- B
Deploy the application in a single AWS Region with an Auto Scaling group to handle traffic spikes.
- C
Leverage Amazon CloudFront with an origin in an S3 bucket to cache content closer to users.
- D
Distribute the application across multiple AWS Regions using Route 53 latency-based routing.
- E
Use an Elastic Load Balancer (ELB) within a single Availability Zone to distribute traffic.
Show answer and explanation
Correct answers: A, C, D
Explanation
To ensure low latency and high availability for a global user base, it's essential to leverage AWS's global infrastructure effectively. AWS Global Accelerator provides optimized routing to the best available endpoint, Amazon CloudFront caches content closer to users, and Route 53 latency-based routing ensures requests are directed to the lowest-latency region. Using a single region or a single Availability Zone does not provide the required global performance and availability.
- A. Correct.
AWS Global Accelerator helps route user traffic to the nearest available healthy endpoint, improving performance and fault tolerance for global applications. This is suitable for reducing latency and ensuring availability.
- B. Incorrect.
Deploying the application in a single AWS Region does not meet the needs for global low latency and high availability. Traffic from distant regions will experience higher latency.
- C. Correct.
Amazon CloudFront is a content delivery network (CDN) that caches content at edge locations, reducing latency for users by serving cached data from the closest location.
- D. Correct.
Distributing the application across multiple AWS Regions with Route 53 latency-based routing ensures that user requests are directed to the region with the lowest latency, improving performance and reliability.
- E. Incorrect.
Using an Elastic Load Balancer (ELB) within a single Availability Zone introduces a single point of failure and does not reduce latency for global users. This is not a best practice for global applications.