AWS Certified Cloud Practitioner
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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.
Real Exam
Community
RRitesh
A
Deploying the application across multiple VPC's
B
Deploying the application across multiple Regions
Explanation:
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:
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Multiple Regions provide geographic redundancy: If one entire region experiences an outage, the application can failover to another region, maintaining availability.
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Higher availability SLAs: Multi-region deployments can achieve higher availability than single-region deployments.
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Disaster recovery: Multiple regions provide true disaster recovery capabilities.
Why not multiple VPCs?
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Multiple VPCs within the same region still share regional infrastructure dependencies
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Regional outages would affect all VPCs in that region
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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.
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