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Global Infrastructure

AWS Regions, Availability Zones, and edge locations

The geographic building blocks of AWS: Regions are separate geographic areas, Availability Zones are isolated locations within a Region, and edge locations bring selected services closer to users.

Key points

  • A Region contains multiple Availability Zones.
  • Multiple AZs reduce reliance on a single failure location and support high availability.
  • Multiple Regions address needs such as disaster recovery, sovereignty, business continuity, or global latency.
  • Edge locations serve services such as CloudFront and do not replace Regions or AZs.

Best-known use cases

  • Deploy across AZs for high availability within a Region.
  • Use an additional Region when a requirement crosses Regional boundaries.
  • Cache content near viewers at edge locations.

What candidates often confuse it with

  • High availability within a Region commonly uses multiple AZs; multi-Region designs address broader failure or locality requirements.
  • An edge location delivers or routes content near users; it is not where an ordinary multi-AZ application is hosted.

Key Cloud Practitioner takeaway

Region contains AZs; multiple AZs support high availability; edge locations reduce distance for edge services.

Related services

  • Amazon CloudFront
  • Amazon Route 53

Relevant exam tasks

  • D3.2

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Exam Weights

Exam snapshot

CLF-C02 at a glance

Category
Foundational
Duration
90 minutes
Questions
65 total; 50 scored and 15 unidentified unscored
Formats
Multiple choice and multiple response
Scoring
100–1,000 scaled score; 700 minimum passing score

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Exam fidelity: AWS documents 65 questions in 90 minutes: 50 scored and 15 unidentified unscored, using multiple-choice and multiple-response formats. This site's practice accuracy and readiness do not reproduce AWS's 100–1,000 scaled scoring or identify unscored items. Difficulty labels describe this site's foundational scenario complexity, not an AWS-published question rating.

Reference

CLF-C02 topics and reference map

Study links

CLF-C02 resources