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AWS Solutions Architect – Associate (SAA-C03): Study Guide

By The Exam Atlas Editorial Team · Verified 2026-05-29

A suggested study plan

Weeks 1–2AWS fundamentals and the Well-Architected Framework; set up a free-tier account
Weeks 3–5Design Resilient and High-Performing Architectures: compute, storage, databases, networking
Weeks 6–8Design Secure Architectures: IAM, encryption, secure networking
Weeks 9–10Design Cost-Optimized Architectures; then full-length timed reviews

The AWS Solutions Architect Associate (SAA-C03) tests whether you can design secure, resilient, high-performing and cost-effective systems on AWS. It rewards judgement about trade-offs, not memorisation. The fastest route to passing is to learn each service in a free-tier account and view everything through the lens of the AWS Well-Architected Framework. This guide is study guidance only, with no real or simulated exam questions.

The four domains, and how to study each

1. Design Secure Architectures (30%)

The largest domain. IAM (users, roles, policies, least privilege), data protection (encryption at rest and in transit, KMS), and secure network design (security groups, NACLs, private subnets). Always ask “who can access this, and is it least privilege?“

2. Design Resilient Architectures (26%)

Multi-AZ and multi-region designs, decoupling with SQS and SNS, Auto Scaling, and backups. The recurring theme is surviving failure gracefully.

3. Design High-Performing Architectures (24%)

Choosing the right compute (EC2, Lambda, containers), storage (S3, EBS, EFS) and databases (RDS, DynamoDB, ElastiCache), plus caching and content delivery (CloudFront). Match the workload to the service.

4. Design Cost-Optimized Architectures (20%)

Right-sizing, storage classes and lifecycle policies, pricing models (On-Demand, Reserved, Savings Plans, Spot), and avoiding waste. Easy marks once you know the pricing levers.

Use the Well-Architected Framework as your compass

For any scenario, the “best” answer usually satisfies the Well-Architected pillars: secure, reliable, performant, cost-effective and operationally sound. Practising in a free-tier account makes these trade-offs intuitive. Avoid “exam dump” sites — they breach AWS policy and copyright and can void your certification.

Key concepts to master

Well-Architected Framework
Six pillars: operational excellence, security, reliability, performance efficiency, cost optimisation, sustainability. The exam's mental model.
High availability across AZs
Design to survive the loss of an Availability Zone using multiple AZs, load balancing and Auto Scaling.
Right service for the job
Know when to use S3 vs EBS vs EFS, RDS vs DynamoDB, EC2 vs Lambda — the exam tests trade-offs.
IAM and least privilege
Roles, policies and the principle of least privilege underpin the security domain.
Decoupling
Use queues (SQS) and notifications (SNS) to build resilient, loosely coupled systems.

Common mistakes to avoid

Free study resources

FAQ

How long does it take to study for the AWS SAA?
Most people need 60–100 hours over 8 to 12 weeks. Hands-on time in a free-tier account shortens this considerably.
Do I need hands-on practice?
Strongly recommended. The exam tests design judgement, which is far easier once you have built and connected services yourself.
Is the SAA mostly about memorising services?
No. It tests choosing the right service and design for a scenario, weighing security, resilience, performance and cost.

Sources