--- title: What is SSO (Single Sign-On)? description: What is SSO, how does single sign-on actually work, and why pair it with MFA? A practical explainer from FuseLogic, Okta Apex Partner Benelux. image: https://www.fuselogic.nl/hubfs/Hero%20images%20882x720/Fuselogic-1778%20(Aangepast).jpg --- [![FuseLogic](https://www.fuselogic.nl/hubfs/Assets/Logo/fuselogic-logo.svg "Back to home")](https://www.fuselogic.nl/en/) [![FuseLogic](https://www.fuselogic.nl/hubfs/Assets/Logo/fuselogic-logo-white.svg "Back to home")](https://www.fuselogic.nl/en/) Challenges [Organizational dynamics Organizational dynamics leads to security risks](https://www.fuselogic.nl/en/organizational-dynamics) [Brake on digital transformation Traditional IAM approaches don't meet the needs of modern, agile organizations](https://www.fuselogic.nl/en/digital-transformation) [Poor first day experience Without access to IT resources, a new employee can't get productive from day one](https://www.fuselogic.nl/en/blog-news/first-day-experience) [Control over cloud identities Keep control over who has access to an ever-growing number of apps and data in the cloud](https://www.fuselogic.nl/en/identity-management-cloud) [Keeping access under control How do you maintain oversight of who has access to which applications and data?](https://www.fuselogic.nl/en/secure-access-applications) [Identity management adoption Getting buy-in requires showing concrete results quickly](https://www.fuselogic.nl/en/identity-management-adoption) Get started Ready for an efficient and fast approach? [Schedule a call](https://www.fuselogic.nl/en/contact) ![Design icon](https://www.fuselogic.nl/hubfs/Assets/Icons/design-element-3.svg) Solutions [Identity & Access Management Quickly gain control over access to applications and data](https://www.fuselogic.nl/en/identity-access-management) [Identity Governance & Administration Efficiently set up and maintain Identity Governance](https://www.fuselogic.nl/en/identity-governance-administration) [Customer Identity & Access Management Improve the digital experience of your customers with CIAM](https://www.fuselogic.nl/en/customer-identity-access-management) [Identity Management integration Fast integration in your IT landscape, with minimal impact](https://www.fuselogic.nl/en/identity-management-integration) [Okta implementation Take your digital experience to the next level with Okta](https://www.fuselogic.nl/en/okta-implementation) [Passwordless login Passwordless login is faster, easier and just as secure](https://www.fuselogic.nl/en/passwordless-login) [SSO and MFA Better protected with SSO and MFA, without compromising on ease of use](https://www.fuselogic.nl/en/sso-mfa) Get started Ready for an efficient and fast approach? [Schedule a call](https://www.fuselogic.nl/en/contact) ![Design icon](https://www.fuselogic.nl/hubfs/Assets/Icons/design-element-3.svg) [Case studies](https://www.fuselogic.nl/en/case-studies) [About FuseLogic](https://www.fuselogic.nl/en/about-us) [Who is FuseLogic? We deliver Identity Management solutions at the speed of business](https://www.fuselogic.nl/en/about-us) [Our approach Our unique *at the speed of business*- approach for Identity Management and Identity Governance](https://www.fuselogic.nl/en/blog-news/speedofbusiness) [How does it work? How does Identity Management *at the speed of business?* work?](https://www.fuselogic.nl/en/blog-news/how-identity-management-works) [Careers at FuseLogic We are always looking for colleagues with IAM experience and a cloud mindset to strengthen our team](https://www.fuselogic.nl/en/careers-at-fuselogic) Choose speed Ready to get started? [Schedule a call](https://www.fuselogic.nl/en/contact) ![Design icon](https://www.fuselogic.nl/hubfs/Assets/Icons/design-element-3.svg) [Blog](https://www.fuselogic.nl/en/blog-news) [Contact](https://www.fuselogic.nl/en/contact) [NL](https://www.fuselogic.nl/blog-nieuws/wat-is-sso-single-sign-on) | EN [Schedule a call](https://www.fuselogic.nl/en/contact) [![FuseLogic](https://www.fuselogic.nl/hubfs/Assets/Logo/fuselogic-logo.svg "Back to home")](https://www.fuselogic.nl/en/) [![FuseLogic](https://www.fuselogic.nl/hubfs/Assets/Logo/fuselogic-logo-white.svg "Back to home")](https://www.fuselogic.nl/en/) Challenges [Organizational dynamics Organizational dynamics leads to security risks](https://www.fuselogic.nl/en/organizational-dynamics) [Brake on digital transformation Traditional IAM approaches don't meet the needs of modern, agile organizations](https://www.fuselogic.nl/en/digital-transformation) [Poor first day experience Without access to IT resources, a new employee can't get productive from day one](https://www.fuselogic.nl/en/blog-news/first-day-experience) [Control over cloud identities Keep control over who has access to an ever-growing number of apps and data in the cloud](https://www.fuselogic.nl/en/identity-management-cloud) [Keeping access under control How do you maintain oversight of who has access to which applications and data?](https://www.fuselogic.nl/en/secure-access-applications) [Identity management adoption Getting buy-in requires showing concrete results quickly](https://www.fuselogic.nl/en/identity-management-adoption) Get started Ready for an efficient and fast approach? [Schedule a call](https://www.fuselogic.nl/en/contact) ![Design icon](https://www.fuselogic.nl/hubfs/Assets/Icons/design-element-3.svg) Solutions [Identity & Access Management Quickly gain control over access to applications and data](https://www.fuselogic.nl/en/identity-access-management) [Identity Governance & Administration Efficiently set up and maintain Identity Governance](https://www.fuselogic.nl/en/identity-governance-administration) [Customer Identity & Access Management Improve the digital experience of your customers with CIAM](https://www.fuselogic.nl/en/customer-identity-access-management) [Identity Management integration Fast integration in your IT landscape, with minimal impact](https://www.fuselogic.nl/en/identity-management-integration) [Okta implementation Take your digital experience to the next level with Okta](https://www.fuselogic.nl/en/okta-implementation) [Passwordless login Passwordless login is faster, easier and just as secure](https://www.fuselogic.nl/en/passwordless-login) [SSO and MFA Better protected with SSO and MFA, without compromising on ease of use](https://www.fuselogic.nl/en/sso-mfa) Get started Ready for an efficient and fast approach? [Schedule a call](https://www.fuselogic.nl/en/contact) ![Design icon](https://www.fuselogic.nl/hubfs/Assets/Icons/design-element-3.svg) [Case studies](https://www.fuselogic.nl/en/case-studies) [About FuseLogic](https://www.fuselogic.nl/en/about-us) [Who is FuseLogic? We deliver Identity Management solutions at the speed of business](https://www.fuselogic.nl/en/about-us) [Our approach Our unique *at the speed of business*- approach for Identity Management and Identity Governance](https://www.fuselogic.nl/en/blog-news/speedofbusiness) [How does it work? How does Identity Management *at the speed of business?* work?](https://www.fuselogic.nl/en/blog-news/how-identity-management-works) [Careers at FuseLogic We are always looking for colleagues with IAM experience and a cloud mindset to strengthen our team](https://www.fuselogic.nl/en/careers-at-fuselogic) Choose speed Ready to get started? [Schedule a call](https://www.fuselogic.nl/en/contact) ![Design icon](https://www.fuselogic.nl/hubfs/Assets/Icons/design-element-3.svg) [Blog](https://www.fuselogic.nl/en/blog-news) [Contact](https://www.fuselogic.nl/en/contact) [NL](https://www.fuselogic.nl/blog-nieuws/wat-is-sso-single-sign-on) | EN [Schedule a call](https://www.fuselogic.nl/en/contact) [![logo](https://www.fuselogic.nl/hubfs/Assets/Logo/fuselogic-logo.svg)](https://www.fuselogic.nl/en/) [Schedule a call](https://www.fuselogic.nl/en/contact) [![logo](https://www.fuselogic.nl/hubfs/Assets/Logo/fuselogic-logo.svg)](https://www.fuselogic.nl/en/) [Schedule a call](https://www.fuselogic.nl/en/contact) [![logo](https://www.fuselogic.nl/hubfs/Assets/Logo/fuselogic-logo.svg)](https://www.fuselogic.nl/en/) [Schedule a call](https://www.fuselogic.nl/en/contact) Challenges [Organizational dynamics](https://www.fuselogic.nl/en/organizational-dynamics) [Digital transformation](https://www.fuselogic.nl/en/digital-transformation) [First day experience](https://www.fuselogic.nl/en/blog-news/first-day-experience) [Identity Management in the cloud](https://www.fuselogic.nl/en/identity-management-cloud) [Access under control](https://www.fuselogic.nl/en/secure-access-applications) [Identity management adoption](https://www.fuselogic.nl/en/identity-management-adoption) Solutions [Identity & Access Management](https://www.fuselogic.nl/en/identity-access-management) [Identity Governance & Administration](https://www.fuselogic.nl/en/identity-governance-administration) [Customer Identity & Access Management](https://www.fuselogic.nl/en/customer-identity-access-management) [Identity Management integration Fast integration in your IT landscape, with minimal impact](https://www.fuselogic.nl/en/identity-management-integration) [Okta implementation](https://www.fuselogic.nl/en/okta-implementation) [Passwordless login](https://www.fuselogic.nl/en/passwordless-login) [SSO & MFA](https://www.fuselogic.nl/en/sso-mfa) [Case studies](https://www.fuselogic.nl/case-studies) About FuseLogic [Who is FuseLogic?](https://www.fuselogic.nl/en/about-us) [Careers at FuseLogic](https://www.fuselogic.nl/en/careers-at-fuselogic) [Our approach](https://www.fuselogic.nl/en/blog-news/speedofbusiness) [How does it work?](https://www.fuselogic.nl/en/blog-news/how-identity-management-works) [Blog](https://www.fuselogic.nl/en/blog-news) [Contact](https://www.fuselogic.nl/en/contact) [Schedule a call](https://www.fuselogic.nl/en/contact) [Back](https://www.fuselogic.nl/en/blog-news) # What is SSO (Single Sign-On)? Most office workers sign in to ten or more applications every day. Email, CRM, HR platform, finance tools, file sharing, internal portals, and a stack of SaaS apps that has been growing quietly for years. Each one wants a password. Many also want a second factor. A few have password rules that conflict with the others. ![FuseLogic employee signing in on a laptop](https://www.fuselogic.nl/hubfs/Hero%20images%20882x720/Fuselogic-1778%20(Aangepast).jpg) ![design element](https://www.fuselogic.nl/hubfs/Assets/Icons/design-element-white-square.svg) ![design element](https://www.fuselogic.nl/hubfs/Assets/Icons/design-element-3.svg) The result is predictable. Users write passwords on sticky notes, reuse the same one across systems, or type it into a private spreadsheet. The IT service desk handles a steady stream of reset tickets that nobody wants. And the security team sees the risk grow with every new application that gets added. Single sign-on, or SSO, is the standard answer to this problem. This article explains what SSO is, how it actually works, why you almost always pair it with multi-factor authentication, and where it fits in a wider identity strategy. ## The problem SSO solves The friction of repeated logins is not just annoying. It has measurable cost. Password resets are still the largest single category of help desk tickets in most organisations. Users develop coping strategies that erode security: shared passwords, written-down passwords, reused passwords across personal and work accounts. The same convenience pressure that frustrates users is also the pressure that creates breaches. And the trend goes one way. The number of business applications per employee keeps rising. Every additional tool widens the gap between what security policy says people should do and what they actually do to get through the day. ## How SSO works SSO replaces many logins with one. The user authenticates once against a central identity provider, and that provider then vouches for them with all connected applications. The applications trust the provider, so they accept the user without asking for credentials again. Under the hood it works with tokens. After the initial sign-in, the identity provider issues a signed token that proves the user's identity to other applications. The main protocols you will run into are: - **SAML 2.0.** The XML-based standard most enterprise applications support. Common for SaaS like Salesforce, Workday, and ServiceNow. - **OpenID Connect (OIDC) and OAuth 2.0.** Lighter, JSON-based, designed for modern web and mobile apps. - **Kerberos.** The traditional choice inside Windows domains, using a ticket-granting ticket the user collects at login. The user does not see any of this. They see a login page once, and then everything else just opens. The identity provider does the heavy lifting in the background. ## Why SSO without MFA is risky This is where teams sometimes stop too early. SSO makes signing in easier for the user. It also makes one set of credentials more valuable to an attacker. If someone steals or guesses that single password, they get the same one-stop access to all connected applications. Security people call this the keys-to-the-castle problem. The fix is multi-factor authentication. MFA adds a second proof of identity to the password: something you have (a phone or hardware token), something you are (fingerprint or face), or something you know (a PIN). For the user it adds one tap or one biometric check. For an attacker it raises the bar from "guess a password" to "compromise the user's device as well", which is a different and much harder problem. Adaptive MFA goes further. It looks at context: which device is being used, where is the request coming from, what time is it, and does this match how the user normally behaves? A login from a managed laptop in the office stays frictionless. A login from a new device in another country at 3 a.m. triggers an extra check. The system gets stricter when the situation gets riskier and stays out of the way otherwise. SSO and MFA together are the standard. One without the other is half a job. ## What you actually gain Two audiences benefit, and they benefit differently. **For users:** one login covers the working day. No more password fatigue. No more "I forgot which one I used here". Faster onboarding into new tools, because access follows the user automatically through their identity in the central provider. **For IT and security:** a single place to enforce password policy, MFA requirements, session length, and conditional access. Off-boarding becomes a single action: deactivate the account in the identity provider and access disappears across every connected application. Audit trails get cleaner. Help desk volume drops, on average by half in the SSO and self-service projects we have delivered. The wider effect: the security team and the user experience team finally agree on something, because for once the safer option is also the easier one. ## How FuseLogic implements SSO and MFA We have been working on identity management for 18 years and have delivered 70+ implementations across the Benelux. As Okta Apex Partner we typically use Okta Workforce Identity as the identity provider, because it works out of the box with most enterprise applications, scales with growth, and stays vendor-neutral on top of your existing stack. The approach is deliberately pragmatic. A first working version is usually live within 10 to 30 days. Not a full rollout, but a working MVP with SSO and MFA active for the two to four most critical applications. From there we expand in sprints, with your team taking the wheel as confidence grows. We also build for handover. The point is not that you depend on us forever. After the implementation, your internal team should be able to add new applications, change policy, and run the environment without us. We document, train, and structure governance so that becomes the default. If Okta is part of the conversation, our [Okta implementation page](https://www.fuselogic.nl/en/okta-implementation) shows what a typical project looks like. For the broader offering, including adaptive MFA and passwordless, see [our SSO and MFA services](https://www.fuselogic.nl/en/sso-mfa). ## When SSO is not the right answer yet An honest note. SSO is not the right first move in every situation. If you have only two or three applications and a small team, a good password manager and well-configured MFA may carry you for now. If you cannot fund proper MFA on top of SSO, wait until you can, because SSO without MFA concentrates risk rather than reducing it. For everyone else, and that is the majority of organisations beyond a certain size, SSO and MFA are the foundation that everything else in identity sits on top of: passwordless, lifecycle automation, identity governance, customer identity. None of those work well without it. Identity management *at the speed of business* is the goal. SSO is where it starts. ![FuseLogic](https://www.fuselogic.nl/hubfs/Assets/Icons/design-element-4.svg) ###### SOLUTION PAPER ### Identity Management *at the speed of business* FuseLogic delivers Identity Management *at the speed of business*: faster and simpler, without compromising on security or ease of use. Download our free solution paper and discover how your organization can achieve this too. [Download your solution paper](https://www.fuselogic.nl/en/solutionpaper-identity-management-speed-business) [![FuseLogic](https://www.fuselogic.nl/hubfs/Assets/Logo/fuselogic-logo.svg)](https://www.fuselogic.nl/en/) The leading Okta partner with over 18 years of experience ### Office Olympia 2D 1213 NT Hilversum Netherlands [035 - 20 40 043](tel:+31352040043) [Info@fuselogic.nl](mailto:info@fuselogic.nl) ### Challenges [Organizational dynamics](https://www.fuselogic.nl/en/organizational-dynamics) [Digital transformation roadblocks](https://www.fuselogic.nl/en/digital-transformation) [First day experience](https://www.fuselogic.nl/en/blog-news/first-day-experience) [IAM in the cloud](https://www.fuselogic.nl/en/identity-management-cloud) [Keeping access under control](https://www.fuselogic.nl/en/secure-access-applications) [Identity Management integration](https://www.fuselogic.nl/en/identity-management-integration) ### Solutions [Identity Management](https://www.fuselogic.nl/en/identity-access-management) [Identity Governance](https://www.fuselogic.nl/en/identity-governance-administration) [Customer IAM](https://www.fuselogic.nl/en/customer-identity-access-management) [Okta implementation](https://www.fuselogic.nl/en/okta-implementation) [Passwordless](https://www.fuselogic.nl/en/passwordless-login) [SSO and MFA](https://www.fuselogic.nl/en/sso-mfa) ### FuseLogic [Case studies](https://www.fuselogic.nl/en/case-studies) [Blog](https://www.fuselogic.nl/en/blog-news) [About FuseLogic](https://www.fuselogic.nl/en/about-us) [Our approach](https://www.fuselogic.nl/en/blog-news/speedofbusiness) [Contact](https://www.fuselogic.nl/en/contact) [Careers](https://www.fuselogic.nl/en/careers-at-fuselogic) ### Receive our tips & updates © 2026 FuseLogic [Privacy statement](https://www.fuselogic.nl/en/privacy-statement) [NL](https://www.fuselogic.nl/blog-nieuws/wat-is-sso-single-sign-on) | EN ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "FuseLogic", "url" : "https://www.fuselogic.nl/en/blog-news/author/fuselogic" }, "datePublished" : "2026-04-27T15:54:19.000Z", "headline" : "What is SSO (Single Sign-On)?", "image" : [ "https://www.fuselogic.nl/hubfs/Hero%20images%20882x720/Fuselogic-1778%20(Aangepast).jpg" ], "mainEntityOfPage" : { "@id" : "https://www.fuselogic.nl/en/blog-news/what-is-sso-single-sign-on", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://www.fuselogic.nl/hubfs/Fuselogic%20logo.png" }, "name" : "FuseLogic B.V." } } ```