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AWS Solutions Architect Associate (SAA-C02)

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


Standard Tier Advanced Tier
Number of parameters 10,000 100,000
Max parameter size 4KB 8KB
Parameter Policy Not supported Supported
Cost Free Paid

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

Last updated: 2022-05-11