What is SSO (Single Sign-On)?
SSO lets users sign in once with a single identity provider (e.g. Microsoft, Google, Okta) and automatically authenticate to every connected application - replacing the password-per-app sprawl that drives credential reuse and breach risk.
Modern SSO uses OAuth 2.0 + OpenID Connect or SAML 2.0 protocols. The big three identity providers for Florida small businesses are Microsoft Entra (formerly Azure AD), Google Workspace, and Okta.
Benefits: easier onboarding (one account vs. dozens), easier offboarding (disable one account, lose access to everything), centralized MFA enforcement, and reduced password reuse.
Most modern SaaS apps support SSO on enterprise tiers; some require an upgrade ('SSO tax'). For HIPAA + FTC Safeguards-bound businesses, SSO is increasingly the cleanest path to compliant access control.
Why it matters for Florida small business
If you fire someone at 4pm, you want to disable one account, not 25.
What to do
If you're on M365 or Google Workspace, you have SSO built in - connect every business app you use to it. For non-M365 stacks, evaluate Okta or Auth0.