Trusted by over 2,500 security-conscious organizations, Duende provides standards-based identity infrastructure purpose-built for high-assurance financial services use cases. Offered as source code-available identity infrastructure - not a black-box service - Duende IdentityServer is a FAPI-aligned OAuth 2.0 and OpenID Connect authorization server with federation broker capabilities delivered as a secure, customizable, and extensible .NET SDK. Duende IdentityServer enables financial institutions to implement compliant, interoperable identity across hybrid, on-prem, and air-gapped environments—reducing integration risk, accelerating delivery of applications and APIs, and enforcing consistent security and consent controls.