Universal containers (UC) has an e-commerce website while customers can buy products, make payments, and...

 To enable SP-initiated SSO using a SAML-based identity provider, UC needs to configure SAML SSO settings in Salesforce and set up acustom domain using My Domain feature. This allows UC to specify the identity provider information, such as the issuer, entity ID, certificate, and SAML assertion attributes. Delegated authentication is a different mechanism that allows Salesforce to delegate the authentication process to an external web service. A connected app is not required for SP-initiated SSO, but it is used for IDP-initiated SSO or OAuth flows. References: Certification - Identity and Access Management Architect - Trailhead, [Set Up My Domain], [Configure SAML Settings for Single Sign-On]