StudyToCert

All certifications / Security Specialty / Lessons

AWS Certified Security – Specialty SCS-C03 · Domain 5: Data Protection

AWS KMS fundamentals: key types, key policies, grants, envelope encryption, encryption context and key rotation

▶ Watch the overview video

Last reviewed September 29, 2026 · Leer en español

AWS Key Management Service (KMS) creates and controls cryptographic keys that never leave its hardware security modules unencrypted. Most AWS services use KMS for encryption at rest, so KMS appears throughout the exam.

Free account

Keep reading for free

Create a free StudyToCert account to read the rest of this lesson: 3 more sections, 4 key terms, a real-world example, an exam tip and self-check questions. Every lesson, lab and practice test is free with an account.

Sign up free Log in

Study Security Specialty for free
A week-by-week plan with every lesson, quizzes, checkpoint tests, a practice exam and hands-on labs.
Open the Security Specialty study plan