Azure Key Vault

Azure Key Vault provides centralized, hardware-backed storage for API keys, passwords, certificates, and cryptographic keys.

Key Vault eliminates hardcoded credentials by moving secrets into a secure, audited repository. It supports three distinct object types: Secrets (passwords and connection strings), Keys (RSA or Elliptic Curve for data encryption), and Certificates (automated X.509 lifecycle management). Security is enforced through FIPS 140-2 Level 2 or Level 3 validated HSMs. Integration is seamless: your applications authenticate via Managed Identities, pull secrets at runtime, and log every access event to Azure Monitor. This setup ensures your developers never see production credentials while maintaining full compliance with standards like SOC 2 and PCI-DSS.

https://learn.microsoft.com/en-us/azure/key-vault/general/overview