Tesseral provides identity and access management infrastructure specifically designed for B2B SaaS applications. The platform offers authentication, authorization, and user management capabilities through developer-focused SDKs and APIs that integrate with major web frameworks including Next.js, React, Flask, Express.js, and Go. The company's core offering includes pre-built login UI components, enterprise identity provider integrations supporting SAML single sign-on and SCIM provisioning with platforms like Okta, Microsoft Entra (Azure), and Google. Tesseral enables developers to implement fine-grained role-based access control (RBAC) with custom permission policies and role management that can be extended to end customers. Key features include user impersonation for customer support scenarios, managed API keys with custom scopes for programmatic access, multi-factor authentication through passkeys and TOTP authenticator apps, and webhook integrations for real-time synchronization. The platform is designed to help B2B SaaS companies implement enterprise-ready authentication and authorization without building these systems from scratch. Tesseral targets both startups and enterprise customers, offering SDKs that simplify implementation of complex identity features. The platform handles authentication flows, user provisioning and de-provisioning, permission management, and API security. The company positions itself as a developer-friendly alternative in the B2B identity management space, with a focus on reducing implementation time while maintaining security standards required for enterprise customers.