How to Study for the AWS Solutions Architect Associate: Complete Strategy Guide | LearnByTeaching.ai

Time Allocation

Roughly 20 of the 65 questions; scenario questions in this domain require careful reading of availability requirements

Key Topics

Study Approach

Resilience questions ask you to design architectures that survive failures. Focus on eliminating single points of failure: use multi-AZ deployments, auto scaling, and decoupled architectures with SQS. Know the four disaster recovery strategies (backup/restore, pilot light, warm standby, active-active) and their RTO/RPO tradeoffs.

Common Mistakes to Avoid

• ✗Choosing expensive active-active solutions when pilot light or warm standby meets the RTO requirement
• ✗Forgetting that RDS Multi-AZ is for high availability, not read scaling (use read replicas for scaling)
• ✗Not using SQS to decouple components that need to handle traffic spikes independently
• ✗Confusing Route 53 routing policies (failover, latency, weighted, geolocation)

Time Allocation

Roughly 18 of the 65 questions; performance questions often hinge on specific service capabilities

Key Topics

Study Approach

Performance questions focus on choosing the right service and configuration for specific workload characteristics. Know which EBS volume type to use for IOPS-intensive vs throughput-intensive workloads. Understand when to use CloudFront vs Global Accelerator, and when ElastiCache Redis is better than Memcached.

Common Mistakes to Avoid

• ✗Choosing gp2 instead of io2 for high-IOPS requirements
• ✗Confusing CloudFront (content caching) with Global Accelerator (network performance)
• ✗Not considering DynamoDB DAX for read-heavy workloads
• ✗Selecting overly complex solutions when a simpler high-performing option exists

Time Allocation

Roughly 16 of the 65 questions; security questions require careful attention to stated security requirements

Key Topics

Study Approach

Security questions test whether you can lock down an architecture following the principle of least privilege. Know the differences between security groups (stateful, instance-level) and NACLs (stateless, subnet-level). Understand when to use VPC endpoints to keep traffic within AWS, and when to use KMS for encryption.

Common Mistakes to Avoid

• ✗Confusing security groups (stateful) with NACLs (stateless)
• ✗Not using VPC endpoints when the question says 'traffic must not traverse the internet'
• ✗Choosing overly permissive IAM policies when least privilege is required
• ✗Forgetting that S3 bucket policies and IAM policies work together for access control

Time Allocation

Roughly 12 of the 65 questions; cost questions often have multiple valid answers — choose the cheapest that meets all stated requirements

Key Topics

Study Approach

Cost optimization questions test whether you can meet requirements at the lowest cost. Know when to use Spot Instances (fault-tolerant, flexible workloads), Reserved Instances (predictable, steady-state), and Savings Plans (flexible commitment). Understand S3 storage class transitions and when to use S3 Glacier.

Common Mistakes to Avoid

• ✗Recommending Reserved Instances for unpredictable workloads
• ✗Not considering Spot Instances for fault-tolerant batch processing
• ✗Overlooking S3 Intelligent-Tiering for unpredictable access patterns
• ✗Ignoring data transfer costs between regions and to the internet