SAA-C03 Exam Dumps : AWS Certified Solutions Architect - Associate (SAA-C03)

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.

AWS Documentation Extract:

“AWS Lambda is a serverless compute service that lets you run code without provisioning or managing servers. You pay only for the compute time you consume. Lambda supports up to 10 GB memory and 15 minutes per invocation.”

(Source: AWS Lambda documentation)

B, D: AWS Glue is intended for ETL on larger datasets or batch jobs, usually with higher operational overhead and cost.

C: EMR is for large-scale distributed processing and is not cost-effective for single, fast, memory-bound jobs.

Amazon SQS with Amazon ECS on AWS Fargate is the best managed architecture for containerized, loosely coupled message processing. SQS is a fully managed message queue that decouples distributed application components and scales without the operational burden of managing broker infrastructure. SNS can fan out messages to the SQS queue when publish-subscribe behavior is needed. ECS on Fargate runs containers without requiring the company to manage EC2 instances, Kubernetes worker nodes, or server capacity. Amazon MQ is useful when applications need traditional broker compatibility, but it does not provide the same virtually unlimited scaling model as SQS standard queues. EC2 Reserved Instances also violate the goal of fully managed infrastructure.

Amazon S3 Glacier Flexible Retrieval is a low-cost archival storage class that supports retrieval of data within minutes (expedited access ~1–5 minutes), making it ideal for audit scenarios where occasional, quick access to archived data is required. In contrast, Glacier Deep Archive takes hours to retrieve.