Upgrading ArcGIS Enterprise to new versions of the software is essential to take advantage of new features and capabilities, stability enhancements, and improved functionality. This Windows and Linux focused session will be full of helpful upgrading information, whether you have upgraded before, or are currently planning your upgrading strategy. We will cover each phase of the upgrade, from pre-upgrade considerations, to the actual upgrade, to a post-upgrade validation checklist, as well as specific considerations for upgrading to ArcGIS Enterprise 11.x.