AWS Certified Solutions Architect – Associate (SAA-C03) Exam Survival Guide

A Fatskills Exam Survival Guide: what to focus on, what to avoid, and how to get through test day without panicking.

Window: Global | Multiple-choice & multiple-response

Must-do topics

• Core services: EC2, S3, RDS/Aurora, DynamoDB, EBS/EFS, ELB, Auto Scaling
• Networking: VPC, Subnets, Route Tables, NAT/IGW, Security Groups, NACLs
• High availability & resilience: Multi-AZ, Multi-Region, failover patterns
• Storage durability & lifecycle: S3 tiers, Glacier, versioning, replication
• Security: IAM (roles/policies), KMS, encryption at rest/in transit, Secrets Manager
• Serverless & event-driven: Lambda, API Gateway, SQS/SNS, EventBridge
• Cost optimization: right-sizing, Savings Plans/RI, S3 lifecycle, Trusted Advisor
• Migration & hybrid patterns; Well-Architected pillars

Top traps (avoid)

• Picking EBS when S3/Glacier or EFS is the better fit
• Confusing SGs (stateful) with NACLs (stateless) on network flows
• Choosing Multi-AZ for scaling (it’s for HA; scaling needs ASG/ALB etc.)
• Forgetting RPO/RTO in DR design; mixing backup vs replication
• Over-engineering when a managed service solves it (RDS vs EC2 DIY DB)

Time split

• 65 Q in 130 min → ~2 min/Q; flag tough scenario Qs
• First pass: clear fits (service selection) → Second pass: edge cases

Last-48h checklist

• Re-read Well-Architected summaries (all 6 pillars)
• S3, RDS, DynamoDB cheat sheets (limits, features, use-cases)
• VPC basics diagrams; SG vs NACL differences
• 1–2 timed practice sets; review only wrongs

Quick facts

• S3 durability 11 nines; availability varies by class
• RDS Multi-AZ = standby replica (sync); Read Replica = scaling (async)
• ALB = HTTP/HTTPS (L7); NLB = TCP/UDP (L4); CLB legacy
• SQS = decoupling; SNS = pub/sub fan-out; EventBridge = routing rules
• KMS: customer-managed CMKs for key control & rotation

Speed tactics

• Map requirement → pillar → service (cost, ops, perf, reliability, security, sustainability)
• Eliminate answers that violate managed service best practices
• For DR: pick simplest that meets RPO/RTO; avoid gold-plating

Day-of mini-plan

• Arrive early; draw a mini VPC diagram from memory
• Read stem → underline constraints (RPO/RTO, cost, compliance)
• Review flagged Qs last; submit only after one calm pass

Ready to practice? Try the AWS Certified Solutions Architect – Associate (SAA-C03) MCQ practice sets on Fatskills.