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. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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 mobile game backend serves mostly static images and JavaScript files from an S3 origin. Users in distant countries report slow load times. What should improve performance most?
RDS read replicas
Why wrong: Read replicas do not accelerate static content delivery from S3.
Amazon CloudFront distribution with the S3 bucket as origin
CloudFront caches content at edge locations close to users, reducing latency.
A larger S3 bucket
Why wrong: Bucket size does not affect user latency.
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 files) at edge locations worldwide. By distributing content closer to users, it significantly reduces latency and improves load times for a global audience, making it the most effective solution for this use case.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
RDS read replicas
Why it's wrong here
Read replicas do not accelerate static content delivery from S3.
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
Read the scenario before looking for a memorised answer.
A larger S3 bucket
Why it's wrong here
Bucket size does not affect user latency.
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 may confuse improving database read performance (RDS read replicas) with improving static content delivery, or assume that scaling compute resources (Auto Scaling) in a single Region can solve global latency issues.
Detailed technical explanation
CloudFront uses a global network of edge locations that cache objects using HTTP GET requests; when a user requests a file, CloudFront serves it from the nearest edge cache if available, or fetches it from the S3 origin and caches it for subsequent requests. This reduces the number of direct S3 GET requests and leverages TCP optimizations at the edge, such as keep-alive connections and protocol optimization (e.g., HTTP/2), to improve performance. In a real-world scenario, a game backend serving millions of users across continents would see dramatic latency reductions (e.g., from 300ms to under 50ms) by using CloudFront with regional edge caches for less-frequently accessed content.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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
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FAQ
Design High-Performing Architectures — This question tests Design High-Performing Architectures — Read the scenario before looking for a memorised answer..
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 files) at edge locations worldwide. By distributing content closer to users, it significantly reduces latency and improves load times for a global audience, making it the most effective solution for this use case.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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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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