Microsoft ended mainstream support for SharePoint 2010 on , and extended support on October 13, 2020 . Migrating from 2010 to later versions (2013, 2016, or SharePoint Online) is notoriously difficult due to changes in the underlying authentication model (claims-based), UI framework, and the removal of certain service applications (e.g., InfoPath forms services).
SharePoint 2010 moved away from folder-based organization toward metadata navigation. The introduction of the allowed organizations to define a centralized taxonomy (tags and hierarchies) that could be applied across the entire enterprise, making search and retrieval significantly faster. microsoft sharepoint server 2010