SAP-C02 Question 263
Select 3Your company operates a globally distributed application that serves customers in multiple regions. To improve the performance and availability of the application, you are tasked with designing a solution using AWS Global Infrastructure. Which of the following considerations are correct when selecting AWS Regions, Availability Zones, and Edge Locations for the application?
- A
Choose AWS Regions based on proximity to your customers to reduce latency and comply with data residency requirements.
- B
Distribute application components across multiple Availability Zones within a Region to ensure high availability and fault tolerance.
- C
Utilize Edge Locations only for storage services like Amazon S3 and avoid using them for improving latency of dynamic content.
- D
Select AWS Regions that offer the lowest cost, regardless of compliance and latency requirements.
- E
Leverage Edge Locations with Amazon CloudFront to reduce latency for delivering both static and dynamic content globally.
Show answer and explanation
Correct answers: A, B, E
Explanation
To build a globally distributed application that is performant and highly available, you must strategically select AWS Regions, Availability Zones, and Edge Locations. AWS Regions should align with customer proximity and compliance needs, while Availability Zones provide fault tolerance within a Region. Edge Locations, as part of Amazon CloudFront, reduce latency by caching and delivering content closer to users. These considerations ensure the application achieves the desired performance, availability, and compliance goals.
- A. Correct.
Correct: AWS Regions should be chosen based on proximity to end-users to reduce latency, as well as compliance with regional data residency requirements, which are critical for certain industries and countries.
- B. Correct.
Correct: Distributing application components across multiple Availability Zones within a Region ensures high availability and fault tolerance. Each Availability Zone is isolated but interconnected with low latency, making them ideal for fault-resilient architectures.
- C. Incorrect.
Incorrect: Edge Locations are not limited to storage services. They play a significant role in improving the latency of delivering both static and dynamic content through services like Amazon CloudFront.
- D. Incorrect.
Incorrect: While cost is an important factor, selecting AWS Regions solely based on cost without considering compliance and latency requirements can lead to performance issues and potential regulatory violations.
- E. Correct.
Correct: Edge Locations are part of Amazon CloudFront's content delivery network (CDN) and significantly improve latency by caching and delivering both static and dynamic content closer to the end-users globally.