I possess the expertise you're seeking for the seamless integration of Single Sign-On (SSO) functionality into your website. With a solid grasp of SAML, OAuth, and OpenID Connect protocols, I'm well-prepared to implement the desired SSO solution. I can also recommend and select a suitable SSO provider if needed. My experience in integrating SSO functionality into websites, coupled with familiarity with diverse SSO providers and their capabilities, ensures a smooth process for user bases ranging from less than 100 to over 1000 users. Let's collaborate to enhance your website's user experience through efficient SSO integration.