What is SSO (single sign-on)?
SSO (single sign-on) lets a user log in once with one identity provider, such as Microsoft or Google, and then open several applications without signing in to each. SAML 2.0 and OpenID Connect, built on OAuth 2.0, are the usual protocols.
Also called: single sign-on
Why it matters
If you sell software to larger companies, SSO is often a condition of the deal, because their IT team wants to control access from one place. For your own staff, it means fewer passwords and access removed in one step when someone leaves. You also get one log of who signed in where.
1Identity providerThe IdP, such as Microsoft Entra ID, Google Workspace or Okta, checks who the user is.
2SSO vs digital signature loginSigning in with a digital signature through NCALayer proves identity on one site; SSO gives one login to many company systems.
3Pair it with MFASSO makes one login more powerful, so protect it with multi-factor authentication.
ExampleA software company in Astana sells a scheduling service to clinics and universities. Their IT teams want staff to sign in with their existing Microsoft work accounts, so the company adds SSO through SAML and OpenID Connect. When an employee leaves, the clinic disables one account and access to the service ends too.
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Customer portal and B2B portalOrders, documents, e-invoices and prices in one account.from 1 000 000 ₸SaaS developmentPlans, teams and payments from release one.from 1 000 000 ₸Web application developmentCustomer portals, B2B portals, MVPs.from 1 000 000 ₸EDS and NCALayerContracts, completion acts and applications signed with an NCA digital signature in your portal, with checks.from 270 000 ₸
Related terms
Customer portalA secure area of your website or app where customers log in to see orders, invoices and documents.SaaSSoftware you rent by subscription and use in a browser, while the vendor hosts and updates it.EDSAn electronic signature that proves who signed a document and that it has not changed since.Web appSoftware that runs in the browser, with logins, data and actions, and needs no installation.
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