A technical guide comparing enterprise SSO architectures for startups, focusing on the distinction between full enterprise IAM platforms and identity broker platforms. Identity brokers sit between customer IdPs and SaaS apps, validating SAML assertions and converting them to JWT/session tokens without replacing existing auth
Table of contents
Best Enterprise SSO Platforms for Startups in 2026The Real Startup Problem: You Already Have AuthenticationEnterprise IAM vs Identity Broker — The Architectural SplitVisual Architecture Breakdown (ASCII Diagram)Why This Matters for StartupsTechnical Deep Dive: What Actually Happens in SAML FederationMulti-Tenant IdP Routing — The Real Enterprise ChallengeWhere SCIM Fits into the ArchitectureBest Enterprise SSO Platforms for Startups (2026 Category-Led Comparison)Pricing Architecture — The Hidden Scalability QuestionDecision Framework for Startup CTOsFrequently Asked QuestionsFinal Opinionated TakeSort: