This document discusses how hub sites in SharePoint can help raise its potential for intranets. It describes hub sites as connecting and organizing sites based on attributes like department or region. This allows for common navigation, branding, and search across associated sites. Key features of hub sites include common themes, shared navigation, news and content rollups, and search across linked sites. The document provides examples of how hub sites can be used and tips for configuration. It also discusses some limitations and alternatives for building modern intranets like third-party solutions and open source options.