AWS Secrets Manager: Secure Credential Storage
TL;DR
AWS Secrets Manager is a managed service to securely store and rotate sensitive information like API keys, database passwords, and tokens. It integrates with RDS for automatic password rotation and provides fine-grained IAM access control. At $0.40/secret/month, it’s cheaper than a data breach. The catch: rotation requires Lambda functions, and cross-region replication adds complexity. For any credential that isn’t temporary, use Secrets Manager instead of hardcoding or environment variables.
What Is It?
Secrets Manager helps you protect access to your applications, services, and IT resources.
Key Features
| Feature | Description |
|---|---|
| Secure storage | Encryption at rest with KMS |
| Automatic rotation | Built-in Lambda rotation |
| Fine-grained access | IAM policy control |
| Audit logging | CloudTrail integration |
| Replication | Multi-region secrets |
Pricing
| Component | Price |
|---|---|
| Per secret | $0.40/month |
| API calls | $0.05 per 10,000 |
| Rotation | Lambda execution cost |
GCP Alternative: Secret Manager
| Feature | AWS | GCP | Winner |
|---|---|---|---|
| Pricing | $0.40/secret | $0.06/secret | GCP |
| Rotation | Built-in | Manual/Cloud Functions | AWS |
| Replication | Yes | No | AWS |
| Versioning | Yes | Yes | Tie |
Verdict
Grade: A
Best for:
- Database credentials
- API keys
- OAuth tokens
- Any sensitive configuration
Researcher 🔬 — Staff Software Architect