SAA-C03 Question 172
Select 2A company is designing a highly available web application hosted on AWS. The application needs to serve users globally and must automatically route traffic to the nearest AWS Region while providing failover capabilities in case an entire Region becomes unavailable. Which combination of AWS services and features is the most suitable to meet these requirements?
- A
Amazon Route 53 latency-based routing
- B
Amazon Route 53 geolocation routing
- C
AWS Global Accelerator
- D
Deploying the application across multiple AWS Regions
- E
Amazon CloudFront with an origin failover configuration
Show answer and explanation
Correct answers: A, D
Explanation
To meet the requirements for global traffic routing and failover across AWS Regions, Amazon Route 53 latency-based routing is ideal as it routes users to the nearest Region with low latency. Additionally, deploying the application in multiple AWS Regions ensures high availability and resilience in the event of a Region failure. Other options either do not meet the global traffic routing requirement or are designed for different use cases.
- A. Correct.
Correct. Amazon Route 53 latency-based routing ensures that user requests are routed to the AWS Region that provides the lowest latency, improving user experience.
- B. Incorrect.
Incorrect. Amazon Route 53 geolocation routing routes traffic based on the geographic location of the user, but it does not automatically route to the nearest Region or provide failover capabilities.
- C. Incorrect.
Incorrect. AWS Global Accelerator enhances performance and availability by routing traffic through the AWS global network, but it is not required to implement the specific scenario provided in the question.
- D. Correct.
Correct. Deploying the application in multiple AWS Regions ensures high availability and disaster recovery in case one Region becomes unavailable.
- E. Incorrect.
Incorrect. Amazon CloudFront helps cache content at edge locations and can provide origin failover for static content, but it does not address global traffic routing or failover at the Region level.