<em>Updating</em> is the process of changing from one minor version of the software to a newer version, such as from version 8.3.4 to 8.3.5, or 8.3.5 to 8.4.0. Starting with version 8.x, you can also update to major versions 9, 10, and beyond if your add-on modules, themes, and install profiles are compatible. <em>Upgrading</em> is the process of changing from an older major version of the software to a newer version, such as from version 7 to 8. <em>Migrating</em> is the process of importing data into a site.