The top 3 SCIM providers for 2025

Secure and seamless automated user provisioning is a fundamental requirement for any SaaS platform selling into the enterprise.

Customers expect SCIM (System for Cross-domain Identity Management), and providers are racing to keep up with varying implementations, compliance requirements, and developer needs. SCIM has become the backbone of automated user lifecycle management, but building and maintaining it in-house rarely makes sense for a growing startup that needs to focus on its core product. Instead, most teams choose to integrate with a specialized SCIM provider.

In this article, we’ll cover why SCIM is essential, how to evaluate providers, and our curated list of the three best SCIM solutions available in 2025.

What is SCIM?

SCIM is an open standard that automates user provisioning and deprovisioning by allowing apps and identity providers to exchange user information. Instead of IT administrators manually creating and removing accounts in your app, SCIM connects identity providers (e.g., Okta, Azure AD, Google Workspace) with your platform, so accounts stay in sync automatically. When a new user is added to the identity provider (e.g., Okta), they automatically get access to all the apps they are assigned (e.g., Slack, GitHub, Notion, etc.).

SCIM can be used to manage things like:

• User provisioning: Grants access to apps for new employees, including all necessary information.
• User deprovisioning: Securely removes access to your app once an employee leaves your customer’s business, or just no longer needs access.
• User permission adjustments: For example, if your customer’s employee moves from being a junior role to a manager role, then they may require corresponding permissions to be updated in your app.
• Group provisioning and adjustment: Used to establish specific user groups that correspond to your customer’s organization.

For SaaS vendors, supporting SCIM is a hard requirement for closing larger deals. Without it, onboarding is slow, offboarding is risky, and IT teams see your app as a liability. A SCIM provider takes the complexity of different identity systems, scaling event traffic, and compliance off your plate, letting you integrate once and meet enterprise expectations.

Why use a SCIM provider?

At first glance, SCIM looks straightforward; it’s a REST API after all. But once you get into the details, the edge cases and scaling challenges can quickly consume engineering time that would be better spent building core product features.

That’s why many teams reach for a SCIM provider. It takes the messy parts off your plate so you don’t have to burn sprints building infrastructure that doesn’t move your product forward.

Here are some of the challenges you’ll run into when building SCIM yourself:

• Inconsistent implementations across providers: We cannot stress this enough. Identity providers and HRIS systems often interpret the SCIM spec differently. Even something as simple as user attributes can vary—firstName in one system, first_name in another. Supporting multiple IdPs means constantly accounting for these variations. Check out SCIM challenges: navigating the idiosyncrasies of different providers for more on this.
• Scaling reliably: In large enterprises, thousands of employees may trigger provisioning changes every day. Missing even one request can create serious security or contractual issues. To handle this volume, you need more than basic webhooks—you need a resilient event streaming system.
• Onboarding friction: Setting up SCIM with a new customer usually requires back-and-forth with their IT team: mapping attributes, configuring endpoints, managing authentication tokens, and testing end-to-end. Without good tooling, this can drag out onboarding and slow down adoption.

How to choose a SCIM provider

The challenges of implementing SCIM are universal, but the ways providers solve them vary a lot. SCIM-as-a-service is still a relatively new category, and each platform takes a slightly different approach in terms of features, pricing, and support.

From our conversations with hundreds of developers evaluating SCIM providers, a consistent set of requirements always comes up. Here’s what to look for:

• Easy integration: Working with a provider should be simpler than building SCIM yourself. Look for an API-first design, SDKs in the languages you use, and broad compatibility with the identity providers (IdPs) and HR systems your customers rely on.
• Sensible pricing: Enterprise user volumes can make costs add up quickly. Most providers price either per onboarded company or per monthly active user (MAU). Both models have trade-offs. Choose the one that aligns with your business model and customer growth.
• Streamlined onboarding: The best providers give you a self-service flow or admin portal you can share directly with your customers’ IT teams. That reduces the back-and-forth of attribute mapping and endpoint configuration, and helps your product look more polished during enterprise onboarding.
• Built for scale: Supporting Fortune 100-level enterprises means handling large spikes in provisioning traffic without dropped events. Look for providers that go beyond basic webhooks and offer real-time, ordered delivery of every provisioning change.

The best SCIM providers

Here’s our curated list of the three most notable SCIM solutions on the market, starting with the one we know best.

1. WorkOS: Purpose-built for SaaS teams that need to ship enterprise features quickly. WorkOS offers SCIM through its Directory Sync API, with real-time event delivery, a self-serve admin portal for IT teams, and flat per-directory pricing. It also comes bundled with SSO, audit logs, and RBAC, making it a broader enterprise toolkit.
2. Auth0: A well-established identity platform where SCIM is offered alongside a wide range of authentication and authorization features. It’s flexible and powerful, though often more complex to integrate and priced on a per-user model.
3. Stytch: Best known for modern login methods like passkeys and magic links, Stytch has also added SCIM support with a clean API and a generous free tier. Its provisioning offering, however, is still relatively unproven compared to more established providers.

1. WorkOS: Enterprise SCIM trusted by leading SaaS, with predictable costs

WorkOS Directory Sync is designed to make SCIM straightforward to integrate while still handling the complexity behind the scenes. It supports both webhooks and an Events API. Webhooks make it easy to get started and are familiar to most developers, but they can introduce challenges at scale, like ensuring requests are delivered in order or handling retries when events are missed. The Events API addresses these gaps by providing a reliable stream of provisioning changes, guaranteed to be ordered. This combination gives teams flexibility.

For developers, the integration process is fast thanks to well-documented APIs, SDKs across multiple languages, and responsive support. For IT admins, WorkOS includes a self-serve onboarding portal, so they can set up their own SCIM connections without long support threads.

Pricing is flat per connected directory ($125 per month per directory, plus volume discounts for over 15 connections) rather than tied to the number of users. This approach better reflects how B2B SaaS companies grow: costs increase when you land more and more big enterprise customers that require features like SCIM, not just because user counts go up. It gives teams a more predictable way to forecast expenses alongside their own revenue growth.

WorkOS is also trusted by some of the fastest-growing and most demanding SaaS companies in the world, including OpenAI, Perplexity, Cursor, Webflow, Vercel, Netlify, Loom, Prefect, Tactic, Copy.ai, and more, to power their enterprise provisioning.

And because WorkOS also provides SSO, audit logs, and RBAC, it gives you a broader foundation for enterprise readiness without juggling multiple vendors.

2. Auth0: Flexible but complex (and pricey)

Auth0 is one of the most established identity platforms, and SCIM is offered as part of its broader suite of authentication and authorization tools. It’s highly flexible, with rules, hooks, and a large integration ecosystem that can be adapted to many different use cases.

That flexibility comes with trade-offs. SCIM is just one feature among many, so the setup process can feel more complex than with providers focused solely on provisioning. For teams that just need SCIM, that can feel like paying for (and maintaining) a lot more platform than you actually need. Pricing is tied to monthly active users (MAUs), which can add up quickly as adoption grows, even if revenue doesn’t scale at the same rate. For teams looking for predictable costs, this model can feel harder to forecast. And because Auth0’s platform involves proprietary constructs like custom Rules or Actions, migrating off it later can require substantial redevelopment.

3. Stytch: Simple but with a limited track record

Stytch is a newer entrant in the identity space, best known for modern authentication features like passkeys, magic links, and one-tap logins. It has recently added SCIM support, expanding its offering beyond authentication into provisioning.

For developers, Stytch provides a clean API and a generous free tier that includes SCIM and SSO connections, making it easy to get started without upfront costs. That said, its SCIM implementation is still relatively new, and the feature depth and reliability required by large enterprise customers aren’t yet fully proven.

Final thoughts

When choosing a SCIM provider for your SaaS app in 2025, the right fit depends on your customer base, technical requirements, and growth stage.

• If you want enterprise-grade SCIM with a fast integration path and predictable pricing, WorkOS is a strong choice.
• If you need a broad identity platform with deep customization, Auth0 can deliver, though with added complexity and cost.
• If you’re experimenting and want to get started quickly, Stytch offers a clean API and generous free tier, but its track record in SCIM is still developing.

In short: start with WorkOS, and you’ll likely ship enterprise provisioning faster, with fewer headaches.

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