A company wants its Amazon EC2 instances to share the same geographic area but use redundant underlying power sources. Which solution will meet these…

An AWS Region is a physical, geographic area. Within each Region, there are multiple, isolated locations known as Availability Zones (AZs). Each AZ consists of one or more discrete data centers, each with redundant power, networking, and connectivity, housed in separate facilities. By deploying Amazon EC2 instances across multiple AZs within the same AWS Region, the company ensures the instances are in the same geographic area while being protected from failures affecting a single location, such as a power outage. This design is a fundamental best practice for achieving high availability.

B. Amazon CloudFront is a Content Delivery Network (CDN) used to cache content closer to users; it is not a database and does not host primary EC2 instances for this purpose.

C. Placing instances in the same Availability Zone would make them share the same underlying power infrastructure, creating a single point of failure and violating the redundancy requirement.

D. Using different AWS Regions would place the instances in separate, distant geographic areas, which contradicts the requirement for them to share the same geographic location.

1. AWS Documentation

"Regions and Availability Zones": "An Availability Zone (AZ) is one or more discrete data centers with redundant power

networking

and connectivity in an AWS Region. AZs give customers the ability to operate production applications and databases that are more highly available

fault tolerant

and scalable than would be possible from a single data center." This source directly supports the concept of using multiple AZs for redundancy.

Source: AWS User Guide

Amazon EC2 User Guide for Linux Instances

Section: "Regions and Availability Zones".

2. AWS Well-Architected Framework

Reliability Pillar Whitepaper: "The best practice is to deploy your workload across multiple Availability Zones (AZs). This architecture is known as a multi-AZ architecture. If one AZ becomes unavailable

the instances in the other AZs can continue to serve traffic."

Source: AWS Whitepaper

AWS Well-Architected Framework

Reliability Pillar

Section: "Withstand component failures"

Sub-section: "Deploy the workload to multiple locations".

3. AWS Documentation

"What Is Amazon CloudFront?": "Amazon CloudFront is a web service that speeds up distribution of your static and dynamic web content... CloudFront delivers your content through a worldwide network of data centers called edge locations." This clarifies that CloudFront's purpose is content delivery

not EC2 hosting for high availability.

Source: AWS Developer Guide

Amazon CloudFront Developer Guide

Section: "What Is Amazon CloudFront?".