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SSM Parameter Store

  • Serverless
  • Used to store parameters & secrets
  • Parameter versioning
  • Seamless Encryption with KMS for encryption and decryption of stored secrets
  • Parameters are stored in hierarchical fashion

Tiers​

Standard TierAdvanced Tier
Number of parameters10,000100,000
Max parameter size4KB8KB
Parameter PolicyNot supportedSupported
CostFreePaid

Parameter Policies​

  • Only supported in advanced tier
  • Assign policies to a parameter for additional features
    • Expire the parameter after some time (TTL)
    • Parameter expiration notification
    • Parameter change notification