Single sign-on (SSO) lets employees access every application with one corporate login, managed centrally by IT through providers like Microsoft Entra ID, Google Workspace or Okta. One password, one place to enforce security policy, one switch to revoke access when someone leaves.
For workplace tools, SSO is what makes adoption frictionless: no separate account to create, no password to forget on the one day a quarter someone books a visitor in. It is usually an IT prerequisite for any enterprise rollout.