A company wants to ensure its application is highly available and can withstand the failure of a single data center. According to AWS best practices, how should the company deploy its application within a single AWS Region?
Deploy all the application's resources into a single Availability Zone.
Deploy the application's resources across multiple Availability Zones.
Deploy the application's resources at AWS edge locations.
Deploy the application's resources across multiple AWS Regions.
The AWS best practice for achieving high availability and fault tolerance within a single AWS Region is to deploy resources across multiple Availability Zones (AZs). An Availability Zone consists of one or more discrete data centers with independent power, cooling, and networking. By distributing application resources across multiple AZs, the application can remain operational even if an entire AZ fails. Deploying resources in a single AZ creates a single point of failure. Deploying across multiple AWS Regions is a strategy used for disaster recovery, reducing latency for a global user base, or for data sovereignty requirements, rather than for intra-Region high availability. AWS edge locations are part of a global content delivery network (CDN) used to cache content closer to users and are not designed for hosting primary application infrastructure.
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AWS Cloud Practitioner CLF-C02
Cloud Technology and Services
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