SSM Parameter Store – Hierarchy

Parameter Structure

• Supports a hierarchical naming model for organization and fine-grained access control.

• Example:

Special Namespaces

• Secrets Manager Reference – /aws/reference/secretsmanager/<secret_id> retrieves secrets stored in AWS Secrets Manager.

• Public Parameters – /aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2 retrieves the latest Amazon Linux AMI.

Environment-Specific Access

• Dev Lambda → uses GetParametersByPath on /my-department/my-app/dev/...

• Prod Lambda → uses /my-department/my-app/prod/...