SAA-C03 study plan

Your step-by-step plan

1. Map the blueprint and book a date

   Day 1

   Read the official AWS exam guide and the four domains with their weights. Book a provisional date now: a fixed date turns open-ended study into a plan and is the strongest predictor of actually sitting. Note that Secure Architectures at 30 percent and Resilient Architectures at 26 percent are over half the exam between them, so plan the heaviest study there.

2. Build the service-selection maps

   Week 1

   Before drilling any domain, build the decision trees the whole exam rests on: access and security (roles versus keys, the secret stores, the network layers, the detection services), decoupling (SQS versus SNS versus EventBridge), storage and database selection by access pattern, and the cost levers. Use the recall prompts in this guide: cover the answer, choose the service from the constraint, then reveal. If you cannot pick from the requirement alone, you do not own it yet.

3. Go deep on secure and resilient design (Domains 1 and 2)

   Weeks 1 to 3

   These two are over half the exam, so they get the most time. Drill least privilege until an IAM role scoped to one action is automatic, learn the secret-store and detection-service splits, and fix the decoupling three-way and the disaster-recovery ladder against RTO and RPO. Practise on scenario questions and read the worked explanation on every one, including the ones you got right, watching for the named constraint that picks the answer.

4. Lock storage, database, and performance selection (Domain 3)

   Weeks 3 to 4

   High-performing design is reliable marks if you drill it as decision trees from the access pattern. Fix the storage split (S3, EFS, FSx, EBS), the database split (RDS, Aurora, Aurora Serverless v2, DynamoDB, DocumentDB), the caching options, and the edge choice between CloudFront and Global Accelerator. Do the Aurora-Serverless-versus-DynamoDB and CloudFront-versus-Global-Accelerator calls by hand until the constraint alone decides them.

5. Cover cost optimisation and its traps (Domain 4)

   Week 4

   Cost is learnable and dependable marks once you know the levers. Drill the S3 class decision and the durability trap (Standard-IA versus One Zone-IA for irreplaceable data), the compute pricing models, the mixed instances policy for a guaranteed floor with savings, and the data-transfer and governance tools. Tie every choice back to the cost constraint named while checking it does not break availability or durability.

6. Drill weak domains, then space the review

   Week 5

   Use your per-domain accuracy to attack the two domains dragging you down, not to re-read what you already know. Then space it: revisit each domain's recall prompts after a few days and again a week later. Spacing roughly doubles what sticks compared with cramming, and it is the cheapest gain available before the exam.

7. Sit a timed mock and calibrate

   Weeks 5 to 6

   Take at least one full timed mock under exam conditions to rehearse pacing and the flag-and-return habit across the full question set in the time allowed. Treat the score as a per-domain readiness signal, not a single number, and review every missed question, naming the constraint you misread, before you book or sit.

Frequently asked questions