This SAA-C03 practice question tests your understanding of design high-performing architectures. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: cloudFront is a Content Delivery Network (CDN).. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A global video platform serves mostly static images and JavaScript files from an S3 origin. Users in distant countries report slow load times. What should improve performance most?
A larger S3 bucket
Why wrong: Bucket size does not affect user latency.
Amazon CloudFront distribution with the S3 bucket as origin
CloudFront caches content at edge locations close to users, reducing latency.
RDS read replicas
Why wrong: Read replicas do not accelerate static content delivery from S3.
An EC2 Auto Scaling group in one Region
Why wrong: More EC2 instances do not cache static S3 content globally.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon CloudFront distribution with the S3 bucket as origin
Amazon CloudFront is a content delivery network (CDN) that caches static content (images, JavaScript) at edge locations worldwide. By distributing content closer to users, it reduces latency and improves load times significantly compared to serving directly from a single S3 origin. This is the most effective solution for a global user base accessing static assets.
Key principle: CloudFront is a Content Delivery Network (CDN).
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
A larger S3 bucket
Why it's wrong here
Bucket size does not affect user latency.
Amazon CloudFront distribution with the S3 bucket as origin
Why this is correct
CloudFront caches content at edge locations close to users, reducing latency.
Related concept
CloudFront is a Content Delivery Network (CDN).
RDS read replicas
Why it's wrong here
Read replicas do not accelerate static content delivery from S3.
An EC2 Auto Scaling group in one Region
Why it's wrong here
More EC2 instances do not cache static S3 content globally.
Common exam traps
The trap here is that candidates might confuse 'scaling' (Auto Scaling, larger buckets) with 'latency reduction' (CDN), or mistakenly think database read replicas can serve static web assets, when in fact they are only for relational database read offloading.
Detailed technical explanation
CloudFront uses a global network of over 600 Points of Presence (PoPs) to cache content at the edge. When a user requests a file, CloudFront routes the request to the nearest edge location, serving cached content if available, which reduces round-trip time from potentially hundreds of milliseconds to single-digit milliseconds. Under the hood, CloudFront supports HTTP/2 and HTTP/3 (QUIC) for faster multiplexed connections, and it can integrate with AWS Shield for DDoS protection and Lambda@Edge for custom logic at the edge.
Key takeaway
CloudFront is a Content Delivery Network (CDN).
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Review cloudFront is a Content Delivery Network (CDN)., then practise related SAA-C03 questions on the same topic to reinforce the concept.
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FAQ
Design High-Performing Architectures — This question tests Design High-Performing Architectures — CloudFront is a Content Delivery Network (CDN)..
The correct answer is: Amazon CloudFront distribution with the S3 bucket as origin — Amazon CloudFront is a content delivery network (CDN) that caches static content (images, JavaScript) at edge locations worldwide. By distributing content closer to users, it reduces latency and improves load times significantly compared to serving directly from a single S3 origin. This is the most effective solution for a global user base accessing static assets.
Review cloudFront is a Content Delivery Network (CDN)., then practise related SAA-C03 questions on the same topic to reinforce the concept.
CloudFront is a Content Delivery Network (CDN).
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Last reviewed: Jun 11, 2026
This SAA-C03 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAA-C03 exam.
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