Thru Add-In for SharePoint is a plugin that extends Microsoft SharePoint's document and content management capabilities by integrating Thru's enterprise file sync and sharing (EFSS) functionality directly into the SharePoint workflow. The add-in enables secure file sharing from within SharePoint libraries, supporting files and folders of any size. It is designed to work without additional user training, as it operates within the existing SharePoint interface and workflow. Security features include file encryption, password protection, and information rights management (IRM). Administrators can monitor file uploads and downloads, verify file authenticity, set time-sensitive expiration controls on shared files, and maintain a real-time audit trail accessible via visual dashboards. Publishing roles can be configured and automatic messaging incorporated to support access governance. The add-in allows users to publish content directly from SharePoint libraries to external web servers without exposing the internal network, conserving local network and server capacity. It also supports the creation of branded links for sharing with external partners, customers, and colleagues. For external collaboration, the add-in leverages Thru's Content Delivery Network (CDN) to distribute files globally, without requiring additional SharePoint implementations. It includes a 99.99% uptime SLA for file availability.