AWS Certified Solutions Architect – Associate (SAA-C03) 2025

The AWS Certified Solutions Architect – Associate (SAA-C03) is one of the most valuable cloud certifications, with an average salary uplift of 25%. This guide covers everything you need to pass the exam in 8 weeks, including free resources, study plan, hands-on practice, and exam-day strategy.

📊 Exam Overview (Recap)

• Duration: 130 minutes
• Questions: 65 (multiple choice / multiple response)
• Passing score: 720/1000 (72%)
• Fee: $150 USD
• Validity: 3 years

📚 Topics & Weightage

1. Design Secure Architectures — 30%
2. Design Resilient Architectures — 26%
3. Design High-Performing Architectures — 24%
4. Design Cost-Optimised Architectures — 20%

🆓 Free Resources (Total: $0)

1. AWS Skill Builder (Free Tier)

• AWS Cloud Practitioner Essentials (free 6-hour course)
• Exam Readiness: AWS Certified Solutions Architect — Associate (free 4-hour course)
• 20+ free digital courses on individual AWS services

2. AWS Free Tier (Hands-on)

• 12-month free tier for new accounts — EC2, S3, RDS, Lambda etc.
• Practice deploying common architectures without spending
• Set up budget alerts ($1) to avoid surprises

3. AWS Whitepapers (Free PDFs)

• AWS Well-Architected Framework (must-read)
• AWS Security Pillar
• AWS Reliability Pillar
• AWS Performance Efficiency Pillar
• AWS Cost Optimisation Pillar
• Disaster Recovery on AWS

4. AWS Documentation

• Each service has 'Getting Started' guide + FAQs
• FAQs are frequently tested in exam — read them!

💰 Paid Resources (Best Value)

1. Adrian Cantrill's Course (~$50)

Best for visual learners — 80+ hours of video + hands-on labs.

2. Stephane Maarek's Udemy Course (~$15 on sale)

Best-selling exam-focused course — 25 hours of focused content.

3. Tutorials Dojo Practice Exams (~$15)

Best practice tests — Jon Bonso's explanations are gold.

4. AWS Official Practice Exam ($75)

Official 20-question practice test with detailed explanations.

📅 8-Week Study Plan (10-15 hours/week)

Week 1 — Foundations + IAM + S3

• Day 1-2: AWS Cloud Practitioner Essentials (free)
• Day 3-4: IAM deep-dive (users, roles, policies, STS)
• Day 5-6: S3 (storage classes, lifecycle, encryption, CORS)
• Day 7: Practice + flashcards

Week 2 — EC2 + VPC + EBS

• Day 1-2: EC2 (instance types, AMI, user data, placement groups)
• Day 3-4: VPC (subnets, route tables, NAT, NACL vs SG)
• Day 5-6: EBS + EFS + FSx
• Day 7: Build 3-tier VPC architecture hands-on

Week 3 — RDS + DynamoDB + ElastiCache

• Day 1-2: RDS (multi-AZ, read replicas, encryption)
• Day 3-4: DynamoDB (partition key, GSI, LSI, capacity modes)
• Day 5-6: ElastiCache (Redis vs Memcached)
• Day 7: Hands-on — RDS + Lambda serverless backend

Week 4 — Route53 + CloudFront + API Gateway

• Day 1-2: Route53 (routing policies, health checks)
• Day 3-4: CloudFront (caching, origins, signed URLs)
• Day 5-6: API Gateway + Lambda
• Day 7: Build static website with CloudFront + S3

Week 5 — SQS + SNS + Kinesis + EventBridge

• Day 1-2: SQS (FIFO vs Standard, DLQ, visibility timeout)
• Day 3-4: SNS + Kinesis Data Streams
• Day 5-6: EventBridge + Step Functions
• Day 7: Build event-driven microservices

Week 6 — Security + Disaster Recovery

• Day 1-2: KMS, CloudHSM, Secrets Manager, Parameter Store
• Day 3-4: AWS Inspector, Macie, GuardDuty, Shield
• Day 5-6: Disaster Recovery strategies (backup/pilot light/warm standby/multi-site)
• Day 7: Hands-on — set up cross-region replication

Week 7 — Practice Tests + Revision

• Day 1-2: Tutorials Dojo Practice Set 1 (timed)
• Day 3-4: Practice Set 2 + review weak areas
• Day 5-6: Stephane Maarek practice tests
• Day 7: AWS Official Practice Exam

Week 8 — Final Revision + Exam

• Day 1-3: Re-read AWS Well-Architected Framework
• Day 4-5: Re-do practice tests, focus on weak topics
• Day 6: Light revision, prepare for exam day logistics
• Day 7: EXAM DAY

🧠 Key Concepts to Master

Well-Architected Framework — 6 Pillars

1. Operational Excellence
2. Security
3. Reliability
4. Performance Efficiency
5. Cost Optimisation
6. Sustainability (new in C03)

Service Limit Memorisation

Know these numbers:

• S3 — max object size 5 TB
• Lambda — max 15 min execution
• DynamoDB — max item size 400 KB
• EC2 — max 288 vCPUs per instance (u-24tb1.metal)

Common Exam Patterns

• 'Most cost-effective' → check for reserved/Savings Plans
• 'Minimise operational overhead' → choose serverless/managed service
• 'Decouple components' → SQS/SNS/Kinesis
• 'Disaster recovery' → cross-region replication + S3 lifecycle

⚠️ Common Mistakes That Lead to Failure

1. Watching videos without hands-on — exam tests practical scenarios
2. Not reading AWS FAQs — exam questions often come from FAQ content
3. Memorising without understanding — scenarios test reasoning
4. Skipping Well-Architected Framework — it underpins everything
5. Not practising time management — 2 min/question average, easy to fall behind
6. Choosing 'expensive' options when 'cheaper' is equally valid

📅 Exam-Day Strategy

• Get 7+ hours sleep the night before
• Reach test centre 30 min early (or set up proctoring 15 min before for online exam)
• Have ID + secondary ID ready
• Skip questions you don't know — mark for review
• Use process of elimination for tough questions
• Manage time: ~2 min/question, 30 min buffer for review

📞 After the Exam

• Provisional result immediately (pass/fail)
• Detailed score report within 5 business days
• Digital badge via Credly within 7 days
• Add badge to LinkedIn — recruiters search 'AWS SAA'