- A
Use S3 event notifications to invoke an AWS Lambda function that performs transcoding and stores results.
Why wrong: Lambda has a maximum execution timeout of 15 minutes, insufficient for 30-minute jobs.
- B
Use S3 event notifications to invoke a Lambda function that submits a job to AWS Elemental MediaConvert for each file.
MediaConvert is a managed, scalable service designed for video transcoding; Lambda handles the orchestration.
- C
Use an Auto Scaling group of EC2 instances with transcoding software installed. Configure S3 events to send messages to an SQS queue, which the instances poll.
Why wrong: EC2 instances require patching and scaling management; not as cost-effective as a managed service.
- D
Use S3 event notifications to trigger an AWS Step Functions workflow that runs an ECS Fargate task for each file.
Why wrong: ECS Fargate adds complexity; MediaConvert is a simpler managed service for transcoding.
Quick Answer
The answer is to use S3 event notifications to invoke a Lambda function that submits a job to AWS Elemental MediaConvert for each file. This is correct because MediaConvert is a fully managed, serverless service purpose-built for high-volume, multi-format transcoding, handling the video transcoding pipeline from raw uploads to MP4, WebM, and HLS outputs without any infrastructure to manage. The Lambda function acts as a lightweight orchestrator, triggering the job as soon as the S3 event fires, which scales automatically to handle hundreds of concurrent uploads and keeps costs low by only paying for processing time. On the SAP-C02 exam, this scenario tests your ability to distinguish between fully managed services and self-managed alternatives like EC2-based transcoding or Elastic Transcoder, which lacks the same multi-format flexibility and scalability. A common trap is choosing EC2 with Auto Scaling, which introduces maintenance overhead and idle costs. Memory tip: think “S3 triggers Lambda, Lambda fires MediaConvert” — the pipeline is event-driven, serverless, and fully managed.
SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 media company is designing a new video transcoding pipeline on AWS. Raw video files (up to 10 GB each) are uploaded by users to an S3 bucket. Each upload must be transcoded into multiple formats (MP4, WebM, HLS) and stored in another S3 bucket. The transcoding job can take up to 30 minutes per file. The company needs a solution that is cost-effective and can handle hundreds of concurrent uploads. The operations team wants to minimize maintenance. Which solution should a Solutions Architect recommend?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Use S3 event notifications to invoke a Lambda function that submits a job to AWS Elemental MediaConvert for each file.
Option B is correct because AWS Elemental MediaConvert is a fully managed, serverless media transcoding service designed for high-volume, multi-format video processing. Using S3 event notifications to invoke a Lambda function that submits a job to MediaConvert offloads the transcoding complexity, scales automatically to handle hundreds of concurrent uploads, and requires no infrastructure maintenance, making it both cost-effective and operationally minimal.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use S3 event notifications to invoke an AWS Lambda function that performs transcoding and stores results.
Why it's wrong here
Lambda has a maximum execution timeout of 15 minutes, insufficient for 30-minute jobs.
- ✓
Use S3 event notifications to invoke a Lambda function that submits a job to AWS Elemental MediaConvert for each file.
Why this is correct
MediaConvert is a managed, scalable service designed for video transcoding; Lambda handles the orchestration.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use an Auto Scaling group of EC2 instances with transcoding software installed. Configure S3 events to send messages to an SQS queue, which the instances poll.
Why it's wrong here
EC2 instances require patching and scaling management; not as cost-effective as a managed service.
- ✗
Use S3 event notifications to trigger an AWS Step Functions workflow that runs an ECS Fargate task for each file.
Why it's wrong here
ECS Fargate adds complexity; MediaConvert is a simpler managed service for transcoding.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may choose Option A (Lambda) without considering the 15-minute timeout limit, or Option D (Step Functions + Fargate) because it sounds serverless, but they overlook that MediaConvert is the fully managed, cost-optimized service specifically designed for this use case.
Detailed technical explanation
How to think about this question
AWS Elemental MediaConvert is a pay-per-use service that automatically scales to handle thousands of concurrent jobs, supports complex job settings like output groups for MP4, WebM, and HLS in a single job, and integrates directly with S3 for input/output. The Lambda function in this solution acts only as a lightweight trigger to submit the job and can return immediately, avoiding timeout issues. MediaConvert also provides built-in features like job queuing, error handling, and detailed CloudWatch metrics, which would require custom implementation with EC2 or Fargate.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Design for New Solutions — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use S3 event notifications to invoke a Lambda function that submits a job to AWS Elemental MediaConvert for each file. — Option B is correct because AWS Elemental MediaConvert is a fully managed, serverless media transcoding service designed for high-volume, multi-format video processing. Using S3 event notifications to invoke a Lambda function that submits a job to MediaConvert offloads the transcoding complexity, scales automatically to handle hundreds of concurrent uploads, and requires no infrastructure maintenance, making it both cost-effective and operationally minimal.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This SAP-C02 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 SAP-C02 exam.
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