AWS Certified Solutions Architect - Associate
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A company operates a subscription-based streaming service within a single AWS Region, utilizing EC2 instances in Auto Scaling groups behind Elastic Load Balancers, and an Amazon Aurora global database spanning multiple Availability Zones. To achieve global expansion and minimal downtime, which solution offers the highest level of fault tolerance?
A company operates a subscription-based streaming service within a single AWS Region, utilizing EC2 instances in Auto Scaling groups behind Elastic Load Balancers, and an Amazon Aurora global database spanning multiple Availability Zones. To achieve global expansion and minimal downtime, which solution offers the highest level of fault tolerance?
Explanation:
Option A is the correct answer. Extending the Auto Scaling groups to a second Region and using an Aurora global database in both the primary and secondary Regions provides the most fault tolerance. This setup ensures that in the event of a failure in the primary Region, Route 53 can reroute traffic to the secondary Region, maintaining high availability and minimal downtime. The use of Aurora global database ensures that the data is synchronized across Regions, allowing for seamless failover.