Single Sign-On
Short definition
A system that lets a user sign in once and access multiple connected applications without re-entering credentials.
Extended definition
SSO reduces password fatigue and improves security (one strong password instead of 10 weak ones). Common protocols: SAML 2.0 (for enterprises) and OpenID Connect (for modern web). Providers: Okta, Auth0, and Microsoft Entra ID.
Example & use case
An Ortech employee signs in once, then accesses the ERP, CRM, and support platform without re-typing their password.
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