Every experienced developer has made the rookie mistake of putting passwords, sensitive configurations, or private key certificates in files and committing them to a code repository. Azure Key Vault is made to be the stronghold fortress of secrets. In Standard mode it's economically unfeasible to penetrate. In premium mode, with Hardware Security Module storage (HSM) enabled, key vaults are centralized, compliance audit-ready FIPS 140-2/L2 cloud native storage for all the things no mortal human can know. We'll check out Key Vault and explore configuring a C# / .NET 6 application from one.