HashiCorp Vault is an open-source secrets management tool that securely stores and tightly controls access to tokens, passwords, certificates, and API keys in modern infrastructure.
⚙️ How Does It Work?
Vault uses dynamic secrets (generating short-lived credentials on demand), encryption as a service, lease-based access, and audit logging. Applications authenticate to Vault and receive time-limited secrets.
📍 Where Is It Used?
DevOps environments, cloud-native infrastructure, Kubernetes deployments, CI/CD pipelines.
💡 Real-World Example
Instead of hardcoding a database password in a config file, the service authenticates to Vault and receives a dynamic credential valid for 1 hour. After expiry it is automatically revoked — eliminating long-lived secrets.
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