Unified Identity.
Built for Developer Control.
Broker and orchestrate federated SSO and complex authentication flows across diverse IdPs (SaaS, on-prem, partner tenants) with the deep control and .NET-native performance your architecture demands.
Challenge
Identity Sprawl: More Risk, More Rigidity, Less Control
Enterprises today often operate without a single source of truth, creating a fragmented identity ecosystem. You're juggling Azure AD, Okta, Ping, legacy IdPs, and on-prem AD/LDAP, compounded by M&A activity and partner demands to "use our IdP." Each new integration adds complexity, results in inconsistent policies, and mounting operational risk.
Impact
Leads to Fragmentation, Vulnerability, and Friction
This fragmented landscape forces manual configuration, protocol juggling, and time-draining mappings for every new IdP or partner. Developers are forced to hard-code trust logic into applications, creating security inconsistencies and slowing delivery. The net result is a fragile patchwork of integrations, compliance gaps, and a disjointed user experience.
Duende IdentityServer customers:
Trusted by over 2500 of the world's most connected and sophisticated organizations.


















Solution
Unifying Identity.
Deep Extensibility.
Absolute Control.
Built for developers, Duende IdentityServer offers teams uncompromised control and flexibility. From cookie-cutter auth solutions with external logins to a fully customized IAM solution or complex federation requirements, our deep extensibility lets you orchestrate and control every aspect of your identity flows.
Federation Gateway:
Acts as a central, configurable broker between all upstream IdPs (AD/LDAP, WS-Fed, SAML, or SaaS providers) and your modern OAuth2/OIDC/FAPI apps
Protocol Bridging & Token Normalization:
Convert any inbound identity tokens/claim set into a consistent, modern OpenID Connect token that your apps can easily consume
Tenant-Specific Orchestration:
Custom business logic, claims mapping, and UX tailored for customers, partners, or tenants - all from one secure, centralized authority
Deep Extensibility:
Full command over the UI/UX, the business logic, and data storage, ensuring compliance and architectural alignment

Benefit
Identity Chaos to Competitive Advantage
Bring your own IdPs, bridge legacy to modern protocols, and scale customer and partner access with confidence and predictable, non-Monthly Active User (MAU) pricing.
Business Agility & Speed
Onboard any IdP instantly
Operational Efficiency
Eliminate custom code and duplication
Compliance & Control
Enforce consistent, auditable identity policies
Developer Trust & Security
Built natively for .NET with proven standards
Predictable Cost
Scale with transparent, predictable pricing and licensing