Design scalable and loosely coupled architectures.
45 practice questions under this official exam objective (SAA-C03), each with the answer key, an option-by-option explanation and instant feedback.
Questions under this objective
45 total · page 1 of 3Migrating 70 TB On-Premises NFS Data to Amazon S3
This question tests choosing the optimal data migration method to Amazon S3 for 70 TB of static video files when speed and minimal network bandwidth a
Storing and Retrieving Bicycle Location Data via REST API
This SAA-C03 scenario requires a multi-tier serverless architecture where bicycle location data is stored and exposed through a REST API for consumpti
How to decouple and scale ingestion of 100,000 messages per second?
The scenario requires a fully decoupled, elastically scalable message ingestion path for bursty traffic that can suddenly reach 100,000 messages per s
How Should RDS Sale Data Reach Multiple Targets?
This SAA-C03 scenario asks how to propagate an Amazon RDS listing removal to multiple downstream systems. The page establishes that AWS Lambda trigger
Ensuring Ordered Order Processing with SQS FIFO
This SAA-C03 question asks how an ecommerce application can guarantee that orders arriving through an Amazon API Gateway REST API are processed in exa
Decoupling Lambda Ingestion and Aurora Writes with SQS
The scenario asks how to absorb high-volume data ingestion into Aurora PostgreSQL without inflating AWS Lambda concurrency quotas, while keeping confi
API Gateway Fanout to Multiple Lambda Functions with Filtering?
The question asks for the least-overhead way to route API Gateway messages to multiple Lambda functions while filtering what each function receives. A
ALB Least Outstanding Requests Routing Algorithm
This page explains how to configure Amazon Application Load Balancer (ALB) to distribute traffic efficiently using the least outstanding requests rout
Cost-Effective Scalable Ecommerce Architecture with SQS
This question addresses decoupling and scaling an ecommerce application using Amazon SQS and Auto Scaling groups to handle peak traffic cost-effective
Which API Gateway Type Is Most Cost-Effective for SNS Pub/Sub?
A serverless migration that needs event-driven pub/sub can use API Gateway, Lambda, and SNS. This page establishes why option D, the HTTP API variant,
How to Invoke a Third-Party HTTP API After an AWS Batch Job Succeeds?
This question tests how to trigger a username/password-protected third-party HTTP API when an AWS Batch job reaches SUCCEEDED, using only serverless c
How to Prevent Duplicate Lambda Payments with SQS FIFO?
A payment processing application on AWS Lambda must avoid duplicate payments across multiple Availability Zones; Amazon SQS FIFO queues provide exactl
Most Cost-Effective EC2 Scaling for Sudden Seasonal Sale Traffic?
For a multi-AZ EC2 website facing sudden seasonal sale traffic spikes, the most cost-effective solution is an Auto Scaling group that scales out on de
Amazon EventBridge Input Transformer for Subset Data
This question tests the use of Amazon EventBridge's input transformer to decouple event sources from targets by delivering only required data subsets.
AWS Serverless Messaging with Exactly-Once Delivery
This question tests the design of a serverless architecture using AWS Lambda and Amazon SQS FIFO queues to achieve exactly-once delivery with minimal
Scaling Aurora PostgreSQL with RDS Proxy and Reader Instances
This question addresses scaling an Amazon Aurora PostgreSQL cluster under heavy read and write load to resolve timeout issues. The correct solution co
Design Scalable and HA Web App with Aurora
This question tests designing a scalable, highly available architecture using Auto Scaling Groups, Application Load Balancers, and Amazon Aurora MySQL
SQS FIFO for Exactly-Once Order Processing
This page explains how to design a scalable order-processing architecture using Amazon SQS FIFO queues to guarantee exactly-once processing during tra
Resolving EKS Node Scaling Issues with Cluster Autoscaler
This question addresses the failure of Amazon EKS nodes to scale out when capacity is reached, requiring a solution that manages node count automatica
How to Process Terabyte-Sized Videos Cost-Effectively on AWS?
Processing terabyte-sized videos that take up to 20 minutes requires compute that scales elastically without server management. This page establishes