Clerk, Auth0, or WorkOS. Shipped in 3 weeks on a monthly subscription. Your procurement team signs off, your IT team connects their IdP, and you close the deal.
- Scope
- Ship
- Iterate
monthly subscription
Who this is for
You're a B2B SaaS CTO chasing your first enterprise contract. Procurement has blocked the deal over a SAML SSO requirement, your current auth stack is email/password only, and your team has never touched identity federation. The timeline is next quarter and the cost of missing it is the deal.
The pain today
- Enterprise procurement blocked because SSO is not supported
- No engineer on the team with SAML or OIDC identity experience
- Clerk vs Auth0 vs WorkOS decision with the wrong stakes and no time to research
- SCIM provisioning is on the questionnaire and nobody can explain what it does
- Security audit expecting SOC 2-grade controls on session management and deprovisioning
The outcome you get
- SAML + OIDC SSO working with Okta, Azure AD, Google Workspace, and OneLogin
- SCIM 2.0 user provisioning — users appear and disappear automatically from your app
- Break-glass admin access for emergencies that bypasses SSO
- Audit log of all authentication events retained and exportable
- Security questionnaire answers ready: certificate rotation, session timeouts, deprovisioning
SSO as a sales blocker — and how to clear it
Enterprise SSO integration is less a technical problem and more a sales-cycle problem wearing technical clothes. The deal stalls when procurement sends a security questionnaire that asks whether your app supports SAML 2.0 single sign-on. If the answer is no, the deal pauses until it is yes.
I've seen this pattern repeat: a B2B SaaS team spends months landing a mid-market or enterprise prospect, then watches it stall at procurement because identity federation wasn't built. The implementation itself — with the right provider — takes 3 weeks. The opportunity cost of waiting is larger than the build cost.
The right framing is not 'when do we need SSO.' The right framing is: if you expect one enterprise customer in the next 12 months, build it before the deal is in play. Retrofitting under deadline pressure is where bugs ship and certifications get rushed.
SAML + OIDC SSO working with Okta, Azure AD, Google Workspace, and OneLogin
Clerk vs Auth0 vs WorkOS — how to pick
Three serious options for modern SaaS; each makes a different trade-off.
Clerk is the best developer experience for teams that want to move fast. Strong for B2C and mixed B2B/B2C apps. SSO is an add-on; native SCIM provisioning is not included — if enterprise customers require automated user provisioning through their directory, Clerk needs external tooling or a custom layer on top.
Auth0 is the most complete platform and the enterprise default. It covers SAML, OIDC, LDAP, SCIM, and every legacy IdP you will encounter. Pricing scales with MAU rather than per enterprise connection, which makes it expensive as your user base grows. Right choice when there is a hard requirement for a legacy enterprise system like SiteMinder or an on-premises Active Directory federation.
WorkOS is purpose-built for B2B enterprise features: SSO, SCIM directory sync, audit logs, and the Admin Portal (a self-serve UI for your customers' IT teams). Pricing is per enterprise connection, which maps cleanly to enterprise deal revenue. For most modern SaaS going upmarket, WorkOS is the most direct path.
Custom SAML from scratch is rarely correct. A from-scratch SAML implementation can take 3 months, generates certificate-rotation risk, and produces code that future engineers will not want to touch. I do not recommend it.
40+: Payment providers integrated.
SAML vs OIDC — and when you need both
SAML 2.0 is what Okta and Azure AD speak by default. It uses XML assertions passed through the browser — verbose and strict, but the enterprise standard. Most Fortune 500 IT teams know SAML and expect it.
OIDC (OpenID Connect) is the modern replacement: JSON/JWT-based, built on OAuth 2.0, natively mobile-friendly, and increasingly adopted by enterprise IdPs alongside SAML. It is cleaner to implement and easier to debug — a trailing slash in your service-provider URL does not silently break everything the way it can in SAML.
For B2B SaaS, the practical answer is: support both. Magic link or OIDC for self-service customers. SAML for enterprise accounts where the IT team dictates the IdP. The identity provider abstracts the protocol difference — your app receives a standardized session regardless of which path the user came through.
The failure modes to plan for: expired X.509 certificates breaking SAML assertions, audience mismatches, wrong entity IDs, and RelayState handling. I wire certificate rotation alerts and document the IdP metadata exchange so your customer's IT team is not left guessing.
SCIM provisioning — why procurement asks for it
SCIM (System for Cross-domain Identity Management) is the protocol that automates user lifecycle in your app. When an employee joins a company using your product, Okta creates them in your app automatically. When they leave or are terminated, Okta deprovisions them — their access is removed without any manual step from your team.
This matters for SOC 2 compliance. Timely deprovisioning is a required control; manual off-boarding is an audit finding. Enterprise IT teams ask for SCIM because they have been burned by terminated employees retaining SaaS access.
From a build perspective: SCIM from scratch is a real project. Through WorkOS or Auth0, it is a configuration and wiring step. I implement the SCIM 2.0 endpoints, test provisioning and deprovisioning against Okta and Azure AD, and hand your customers' IT teams the SCIM base URL and bearer token they need to configure their side.
At bolttech, the $1B+ insurtech unicorn where I led payment integrations, enterprise partner onboarding across 15+ markets meant provisioning and deprovisioning had to be reliable and auditable. The same discipline applies at SaaS scale: get provisioning right once and every enterprise deal that follows it is faster to close.
Enterprise security controls procurement expects
SSO implementation ships with the full set of controls that enterprise procurement and SOC 2 audits typically require. Here is what I document and deliver:
Audit log: every authentication event — login success, login failure, MFA challenge, SAML assertion received, session expired — logged with timestamp and user ID, retained for at least one year, exportable.
Session management: idle timeout (configurable, typically 30 minutes), absolute session timeout (typically 8 hours), concurrent session controls if required.
Certificate rotation: SAML X.509 certificates have expiry dates. I set up rotation alerts so a certificate expiry does not silently break login for every enterprise customer at once.
Break-glass access: super-admin accounts that can bypass SSO in emergencies, with their own separate MFA, logged separately.
Security questionnaire: I supply written answers to the identity and access management section of standard vendor security questionnaires. Half of SSO work is documentation; the other half is the build. Both land in the delivery.
Timeline and pricing
First version of SSO integration fits the Applications Standard tier at $4,999/mo. The build itself typically finishes in 3 weeks: provider selection, SAML and OIDC endpoints wired, SCIM provisioning live, audit logging in place.
Then comes customer coordination. Each enterprise customer's IT team needs to exchange metadata, configure their IdP, test provisioning, and validate the setup in their environment. That stage runs 1-2 weeks per customer and continues on subscription — it is not a one-time effort.
Multi-provider SSO (Okta plus Azure AD plus Google Workspace plus a custom enterprise IdP) or complex SCIM edge cases with non-standard provisioning schemas moves to Pro at $5,499/mo.
14-day money-back guarantee. Cancel anytime. Work Made for Hire — the code is yours. The provider license (Clerk, Auth0, or WorkOS) is billed directly to you.
Recent proof
A comparable engagement, delivered and documented.
Unified payment orchestration across Asia and Europe
Delivered the payment orchestration platform at bolttech, a $1B+ unicorn, with 40+ integrations across multiple regions.
Read the case studyFrequently asked questions
The questions prospects ask before they book.
The build takes 3 weeks: provider configured, SAML and OIDC endpoints live, SCIM wired, audit logging in place. After that, each enterprise customer's IT team needs 1-2 weeks to configure their IdP, exchange metadata, and test provisioning in their environment. The code is fast. The customer coordination is what makes enterprise deals feel slow.
Yes. SSO layers on top of your current email/password login — it does not replace it. Existing users keep their original credentials. When an enterprise workspace admin enables SSO, SAML takes priority for that workspace. Users outside that workspace continue logging in as before. Break-glass admin accounts bypass SSO entirely.
SAML SSO alone satisfies most initial enterprise procurement requirements. SCIM provisioning comes up when the enterprise customer's IT team wants automated user lifecycle management — employees added and removed through their directory sync without any manual step. If their security questionnaire asks about automated deprovisioning, you need SCIM. I include both in the standard build.
SAML 2.0 is the older enterprise standard — XML-based, strict, what Okta and Azure AD speak by default. OIDC is the modern alternative built on OAuth 2.0, JSON-based, cleaner to implement, and natively mobile-friendly. Enterprise IdPs now support both. For a B2B SaaS app, I implement both: OIDC for self-service customers, SAML for enterprise accounts whose IT team configures the IdP.
Yes — those are the three I test against first. WorkOS and Auth0 both ship pre-configured connectors for Okta, Microsoft Entra ID (Azure AD), and Google Workspace, plus a generic SAML/OIDC connection for any other IdP. Truly legacy systems like on-premises Active Directory Federation Services or SiteMinder usually require Auth0 specifically.
Provider costs are separate and billed directly to you. WorkOS charges per enterprise connection — roughly $125/month per customer at list price, with volume discounts as your enterprise customer count grows. Auth0 charges per monthly active user, which can become significant at scale. Clerk's SSO add-on pricing depends on your plan. Most SaaS products price their enterprise tier to cover these fees comfortably.
Yes. I deliver written answers to the identity and access management section of standard vendor security questionnaires — covering audit logging, session timeouts, certificate rotation, deprovisioning, MFA, and break-glass access. Your compliance team gets specific implementation details they can point to. It is part of the standard delivery, not a separate engagement.