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AWS Key Management Service

Ch 126.5of 16 Key Management Software
  1. 1Runs onAPI, Web
  2. 2Costspaid from $1/mo
  3. 3Deployment modelcloud
  4. 4Key audit logsYes
4 lines stated Written from the maker's own pages: aws.amazon.com
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The AWS Key Management Service homepage

Overview

AWS Key Management Service is ranked #12 of 16 in key management software on Specifiction. It runs on API, Web. Paid plans start at $1/mo.

AWS Key Management Service plans and pricing

All plans
AWS KMS $1/mo $1/month (prorated hourly) per KMS key; API requests are charged separately 20,000 requests/month free tier across Regions; asymmetric-key requests and specified key-pair operations are excluded aws.amazon.com · 29 Sept 2026

Compared on key management software

Free plan
Noaws.amazon.com
Paid from
$1/moaws.amazon.com
Deployment model
cloudaws.amazon.com
Key audit logs
Yesaws.amazon.com

Facts

Purpose
AWS KMS creates and controls cryptographic keys used to encrypt data and digitally sign it.aws.amazon.com · 29 Sept 2026
Key management
KMS provides centralized control over key lifecycles and permissions, including separate control over who manages keys and who uses them.aws.amazon.com · 29 Sept 2026
Cryptographic operations
KMS supports symmetric encryption, asymmetric signing or encryption key pairs, and generation and verification of HMACs.aws.amazon.com · 29 Sept 2026
Application libraries
The AWS Encryption SDK supports KMS as a key provider for encrypting and decrypting data locally in applications.aws.amazon.com · 29 Sept 2026
Integrations
KMS integrates with AWS services including Amazon S3, Amazon EBS, Amazon RDS, Amazon DynamoDB, AWS Lambda, and AWS CloudTrail.aws.amazon.com · 29 Sept 2026
Auditing
When CloudTrail is enabled, KMS requests are recorded with details such as the user, time, API action, and key used.aws.amazon.com · 29 Sept 2026
Key protection
KMS uses hardware security modules validated to FIPS 140-3 Security Level 3 to protect key material and cryptographic operations.aws.amazon.com · 29 Sept 2026
Plaintext keys
AWS states that plaintext keys are never written to disk and are used only in HSM volatile memory for the requested cryptographic operation.aws.amazon.com · 29 Sept 2026
Compliance
AWS lists KMS validations or certifications including SOC 1, SOC 2, SOC 3, PCI DSS Level 1, FedRAMP, HIPAA, and FIPS 140-3.aws.amazon.com · 29 Sept 2026
Multi-Region keys
Multi-Region keys share key material and key IDs across Regions and can support cross-Region workflows such as disaster recovery.aws.amazon.com · 29 Sept 2026
External key stores
With an external key store, keys are generated and stored in an external key manager that the customer owns and manages, and key material stays in that HSM.aws.amazon.com · 29 Sept 2026
Custom key store limits
Custom key stores are unavailable in the AWS China (Beijing) and AWS China (Ningxia) Regions and do not support asymmetric KMS keys.aws.amazon.com · 29 Sept 2026
Scaling and limits
KMS automatically scales as encryption needs grow, has default limits for key counts and request rates, and allows customers to request higher limits.aws.amazon.com · 29 Sept 2026
Pricing exclusions
AWS-managed and AWS-owned key creation and storage are not charged, but API requests to AWS-managed keys are chargeable.aws.amazon.com · 29 Sept 2026
Post-quantum support
KMS supports post-quantum TLS using ML-KEM and post-quantum signatures using ML-DSA.aws.amazon.com · 29 Sept 2026

Best AWS Key Management Service alternatives

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All accessCh 01 Thales CipherTrust Data Security Platform Free planFree trialAPI Free to start7.6 All accessCh 02 Entrust Certificate Manager AndroidAPI 7.1 All accessCh 03 Fornetix Key Orchestration Platform Free trialAPILinux 7.1 All accessCh 04 Cryptsoft KMIP Server APILinux 6.9 All accessCh 05 Eviden KMS APILinux 6.9 All accessCh 06 Oracle Cloud Infrastructure Secret Management Free planAPIWeb Free to start6.9

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