AWS SCS-C03 Exam Overview
What to Expect
The AWS Certified Security – Specialty exam costs $300 USD You'll face 65 questions in 170 minutes, giving you roughly 2 minutes and 37 seconds per question. Scaled 100 to 1000, passing score of 750. The higher passing score reflects the specialty difficulty level.
Prerequisites and Audience
AWS recommends holding the SAA and having at least five years of IT security experience with two years specifically in AWS security. This is a specialty exam and the prerequisites reflect that. Security engineers, security architects, and compliance professionals who design and implement security solutions on AWS. This cert targets people responsible for keeping AWS environments secure.
Staying Certified
Valid for three years with standard AWS renewal options.
Recent Changes
SCS-C03 replaced SCS-C02 and expanded coverage of container security, serverless security patterns, and automated security response. Security Hub and AWS Organizations-level security controls are more prominent.
AWS SCS-C03 What the Exam Tests
Domains include Incident Response, Security Logging and Monitoring, Infrastructure Security, Identity and Access Management, and Data Protection. You must know GuardDuty, Security Hub, Macie, KMS, CloudHSM, WAF, Shield, and how they integrate.
Identity and Access Management
Identity and Access Management at 20% is a substantial portion of the exam. You can't afford to be weak here. Focus on understanding the core concepts and common scenario patterns.
Infrastructure Security
Infrastructure Security at 19% is a substantial portion of the exam. You can't afford to be weak here. Focus on understanding the core concepts and common scenario patterns.
Data Protection
Data Protection at 18% is a substantial portion of the exam. You can't afford to be weak here. Focus on understanding the core concepts and common scenario patterns.
Detection
Detection accounts for 15% of questions. While not the heaviest domain, it can make the difference between passing and failing. Don't neglect it.
Question Format
Multiple-choice and multiple-response. Questions are scenario-heavy, describing security incidents or compliance requirements and asking you to choose the most secure or efficient response.
AWS SCS-C03 How to Prepare
Study Timeline
Three to four months for candidates with strong AWS and security backgrounds. If you're weaker in IAM policy writing or encryption concepts, add extra time for those areas.
Top Resources
AWS Security documentation, the Security Pillar of the Well-Architected Framework, and hands-on practice with GuardDuty, Security Hub, and KMS. Work through AWS Security Workshops available on GitHub.
Common Mistakes
Focusing only on service features without understanding how they work together. The exam tests integrated security architectures. You need to know how GuardDuty findings flow to Security Hub, trigger EventBridge rules, and launch automated remediation.
Hands-On Advice
Set up Security Hub with GuardDuty, Macie, and Inspector. Create custom KMS key policies. Build automated incident response workflows with EventBridge and Lambda. Configure WAF rules on an ALB. Practice writing SCPs for Organizations.
AWS SCS-C03 Why Practice Tests Matter
Practice tests are the single most effective study tool for the AWS SCS-C03 exam. They reveal your weak domains before the real exam does, and getting questions wrong in practice is how you learn. Each practice test here mirrors the real exam format: 65 questions, timed at 170 minutes, with the same 6-domain distribution.
Don't just take practice tests and check your score. Review every wrong answer and understand why the correct option is better. For the AWS SCS-C03, pay special attention to Identity and Access Management (20%) and Infrastructure Security (19%) questions since they carry the most weight.
