One sign-in for all applications: single sign-on saves time, reduces password chaos and makes access centrally controllable. Here is how to introduce SSO sensibly.
With single sign-on, users sign in once to a central identity provider. Applications trust its confirmation and do not demand their own sign-in. Common standards are SAML and OpenID Connect. Identity providers include Microsoft Entra ID or an Active Directory with federation services.
Benefits
Fewer passwords: fewer forgotten ones, fewer notes, fewer support requests.
More security: MFA and access rules apply in one central place.
Fast joiners and leavers: disabling the central account ends all access.
Overview: it is traceable who may access which application.
Rollout in steps
Inventory applications and check which support SAML or OpenID Connect.
Choose the identity provider and clean up the user directory.
MFA first: it protects the central access.
Pilot with a few applications, then extend step by step.
Plan exceptions: applications without SSO support remain with strong passwords in the password manager.
What to watch
The central access becomes a valuable target, so MFA, monitored administrator accounts and an emergency access are mandatory. Also plan what happens if the identity provider fails.
single sign-onintroduce SSOSAML OpenID Connectidentity provider
Frequently asked questions
What is single sign-on?
Single sign-on allows access to multiple applications after a single sign-in at a central identity provider.
Is SSO more secure than individual passwords?
Generally yes, because MFA and access rules apply centrally and fewer passwords circulate. The central access must therefore be protected particularly well.
Which standards does SSO use?
SAML 2.0 and OpenID Connect, which builds on OAuth 2.0, are widespread.