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Answer: Deploying the application across multiple Regions
## Explanation For achieving high availability (99.5% uptime or higher) for a crucial ecommerce application, deploying across **multiple AWS Regions** is the correct strategy because: - **Multiple Regions provide geographic redundancy**: If one entire region experiences an outage, the application can failover to another region, maintaining availability. - **Higher availability SLAs**: Multi-region deployments can achieve higher availability than single-region deployments. - **Disaster recovery**: Multiple regions provide true disaster recovery capabilities. **Why not multiple VPCs?** - Multiple VPCs within the same region still share regional infrastructure dependencies - Regional outages would affect all VPCs in that region - While multiple Availability Zones within a region can provide good availability, multi-region provides even higher resilience **Best Practice**: For mission-critical applications requiring 99.5%+ uptime, a multi-region deployment strategy with proper failover mechanisms is recommended.
Author: Ritesh Yadav
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Your company handles a crucial ecommerce application. This application needs to have an uptime of at least 99.5%. There is a decision to move the application to the AWS Cloud. Which of the following deployment strategies can help build a robust architecture for such an application.
A
Deploying the application across multiple VPC's
B
Deploying the application across multiple Regions
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