If you're building a B2B SaaS product, this is your story:
You start with basic email and password authentication. Works fine for early customers. Then a mid-market prospect asks about social login. Months later, an enterprise deal hinges on SSO. Your security team wants Multi-Factor Authentication (MFA) across the board. IT admins need Directory Sync (SCIM) provisioning and Audit Logs.
Chaos!
Suddenly, authentication isn't a weekend project anymore. It's months of engineering time, dozens of identity provider integrations, and constant maintenance as security standards evolve.
WorkOS built AuthKit to solve this exact problem.
Why teams trust WorkOS
WorkOS powers authentication and enterprise features for the fastest-growing tech companies. Think OpenAI, Cursor, Vercel, and a long list of enterprise solutions:
OpenAI uses WorkOS to manage thousands of SSO connections. Cursor scaled to millions of users while staying protected against fraud and free trial abuse. Webflow serves enterprise customers like PWC, Dell, and Philips through WorkOS.
WorkOS offers a complete suite of enterprise-ready products:
While WorkOS has always offered standalone solutions, teams kept asking for an all-in-one platform. Software that handles everything from basic login to enterprise SSO without duct-taping multiple systems together.
That's AuthKit.
What makes AuthKit different?
AuthKit is WorkOS’s complete authentication platform.
It's not just login boxes and password resets. It's a full-stack solution that scales with you from your first user to millions.
Bryant Chou, Webflow’s Co-founder, experienced this firsthand:
"Instead of planning, developing, and testing SSO for each identity provider in-house over three months as we initially scoped, I was able to support all Identity Providers in a few hours. Integrating WorkOS was straightforward and fun."
The platform includes everything you need:
Hosted UI that handles the complex authentication flows so you don't have to build them. It's fully customizable to match your brand, and it abstracts away the security complexities that trip up most teams.
Enterprise authentication, which includes support for SSO, passkeys, social login, passwords, etc., through a single integration. No more building separate flows for each authentication method.
Roles and Permissions give you advanced access control with custom roles and role assignment. Your customers can manage exactly who sees what in their organization.
Radar protects your application from bots, fraud, and abuse. Cursor kept free trial abuse under control with this feature.
Custom Metadata lets you store additional information about users and organizations without awkward database workarounds.
Connect provides built-in support for MCP and OAuth applications, so your users can integrate with the tools they already use.
The beauty of AuthKit is that these aren't separate products you're trying to wire together. It's one cohesive platform that just works.
If you’re thinking, “Will this work for my business?...”
Let's talk about what AuthKit supports, because this is where most authentication platforms fall short.
SSO (Single Sign-On) is table stakes for enterprise deals. It supports all major identity providers. Okta, Azure AD, Google Workspace, OneLogin. You name it.
"SSO is a crucial part of our Enterprise Pro plan, and with WorkOS, we could roll it out in less than a week. Docs are comprehensive, the Admin Portal has made customer onboarding a breeze, and the level of support we received directly in Slack has been phenomenal."
Email + Password seems simple until you factor in password reset flows, email verification, rate limiting, and secure session handling. AuthKit handles all of it.
Passkeys are the future of authentication. They're more secure than passwords and way more convenient for users. AuthKit makes implementation dead simple.
Social Login means your users can sign in with Google, GitHub, Microsoft, and other providers they trust. Fewer passwords to remember, faster onboarding, happier users.
Multi-factor Authentication works seamlessly across all authentication methods.
Magic Auth eliminates passwords entirely with secure, one-time login links. Perfect for user-friendly flows that don't compromise security.
CLI Authentication allows your engineering users to authenticate from the command line without jumping through hoops.
"The decision to use WorkOS was straightforward. We saw good feedback from existing customers and reviewing the documentation made us confident that our needs would be addressed."
What actually happens when teams use Authkit?
Hopin saved two months of engineering time and tested their SSO integration with customers within two weeks. When they needed to support additional identity providers beyond Okta, it took zero additional development effort.
David Kramer, Webflow's Senior Engineering Manager, mentioned, "We were leaving deals on the table because we just didn't have SCIM support and that was a hard requirement for larger organizations."
“Cursor now completely runs on WorkOS. Login times are much faster, the signup page looks much better, and we’re not subject to Auth0's customer-hostile and opaque pricing anymore.” said Arvid Lunnemark, Cursor’s Founder.
How to get started with AuthKit?
Building authentication in-house is hard. Most teams underestimate the effort by months. You're building secure session handling, access control, multi-factor auth, support for passkeys and social login, plus enterprise features like SSO and Directory Sync.
AuthKit gives you a complete solution that scales from early-stage apps to enterprise-grade products.
You can use its drop-in login UI or integrate it with your existing flows. As you grow, you can layer in enterprise features without re-architecting your authentication system.
The fastest and simplest way to start is by using hosted AuthKit, but the app also allows you to self-host your frontend.
Authentication made simple, flexible, and enterprise ready from day one.