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SAA-C03 · Question #406

SAA-C03 Question #406: Real Exam Question with Answer & Explanation

The correct answer is A: AWS Lambda with a Python script. AWS Lambda supports functions up to 10 GB of memory and 15 minutes execution time. Each invocation here requires only 1 GB of memory and finishes in 30 seconds, making it an ideal fit for Lambda. Lambda is cost-effective for event-driven, short-duration workloads and requires no

Submitted by neha2k· Mar 4, 2026Design Cost-Optimized Architectures

Question

A company wants to release a new device that will collect data to track overnight sleep on an intelligent mattress. Sensors will send data that will be uploaded to an Amazon S3 bucket. Each mattress generates about 2 MB of data each night. An application must process the data and summarize the data for each user. The application must make the results available as soon as possible. Every invocation of the application will require about 1 GB of memory and will finish running within 30 seconds. Which solution will run the application MOST cost-effectively?

Options

  • AAWS Lambda with a Python script
  • BAWS Glue with a Scala job
  • CAmazon EMR with an Apache Spark script
  • DAWS Glue with a PySpark job

Explanation

AWS Lambda supports functions up to 10 GB of memory and 15 minutes execution time. Each invocation here requires only 1 GB of memory and finishes in 30 seconds, making it an ideal fit for Lambda. Lambda is cost-effective for event-driven, short-duration workloads and requires no infrastructure management. AWS Glue and EMR are better suited for large-scale ETL or distributed processing, which is unnecessary and more costly for this workload.

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