The document provides information about migrating from SharePoint 2010 to SharePoint 2013. It discusses cleaning up the existing SharePoint 2010 environment by auditing and organizing content, configurations, and customizations. It also covers collecting all visual and data structure customizations. The document outlines the steps to migrate including preparing the new SharePoint 2013 environment, upgrading service applications, creating web applications in 2010 mode, attaching content databases, and testing in 2010 mode. It briefly discusses evaluating sites in SharePoint 2013 mode and finalizing the visual upgrade on a site-by-site basis.