Which feature is not included in the Help Center Template?

The correct feature that is not included in the Help Center Template is Salesforce Identity (SSO). The Help Center Template primarily focuses on delivering a self-service experience for users, allowing them to access knowledge articles, submit cases, and utilize case deflection strategies without the need for authentication.

Salesforce Identity provides single sign-on (SSO) capabilities, enabling users to log in to various Salesforce applications through a single set of credentials. However, this feature is more related to securing and managing user access across various Salesforce environments rather than the primary functions of the Help Center Template. Therefore, while other features like self-service, case deflection, and curated knowledge are integral to the Help Center's purpose of facilitating user assistance and reducing support costs, Salesforce Identity (SSO) is not a built-in requirement or focus of the Help Center Template.