The document discusses extranets and customer portals using cloud hybrid solutions. It describes how companies can use extranets to share information with external partners and customers. Effective extranets provide security, easy access to information, and collaboration capabilities. The document recommends using Microsoft SharePoint 2013 to build extranets due to its flexibility and ability to integrate with cloud-based Office 365. Sentri offers several services to help plan, design, deploy and manage SharePoint extranets.