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AWS KMS vs. AWS Certificate Manager: The Ultimate Guide to Cloud Security Layers
- The distinction between AWS Key Management Service (KMS) and AWS Certificate Manager (ACM) is crucial for cloud security, with KMS focusing on encryption at rest and ACM on secure communication in transit.
- KMS acts as a Vault Keeper, managing encryption keys securely for data encryption, while ACM functions as a Digital Passport Office, issuing SSL/TLS certificates for secure communication.
- KMS encrypts data when stored, securing digital assets, while ACM secures data during transit, ensuring secure communication channels.
- KMS involves Customer Master Keys (CMKs) for encryption, while ACM deals with SSL/TLS certificates for authentication and encryption.
- Common pitfalls include confusion between in-transit and at-rest encryption, misconfigurations in KMS key policies, and issues with ACM DNS validation.
- Pro tips include using KMS multi-region keys for disaster recovery, implementing ACM key policies for cross-account access, and leveraging ACM Private CA for internal PKI.
- Understanding the distinct roles of KMS and ACM is essential for building secure, compliant, and resilient cloud applications on AWS.
- KMS and ACM are complementary layers in cloud security, providing fundamental building blocks for data encryption and secure communication.
- AWS KMS and AWS Certificate Manager are not competitors but partners in creating a secure cloud environment by encrypting data at rest and securing data in transit, respectively.
- To deepen knowledge, explore AWS KMS Developer Guide, AWS Certificate Manager User Guide, or consider pursuing the AWS Security Specialty certification.
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