Vault Secret Management is the daily practice of using HashiCorp Vault to securely store, retrieve, and manage secrets (API keys, database passwords, tokens, certificates, etc.). Instead of secrets in code, .env files, or password managers, you store them in Vault. Applications and scripts fetch secrets on demand, with full audit trails and automatic rotation where possible. You use Vault CLI or API to store/retrieve secrets, manage authentication, and audit access. It's simpler than Enterprise integration but focuses on day-to-day operations.