As an IT administrator, you may want to upgrade your macOS systems to new versions using FileWave.
When Apple releases new versions of macOS there is usually a prior version that is no longer supported. Upgrading 1 or 2 devices manually is not a lot of work, but if you support dozens, hundreds or thousands of macOS systems then automation is the only realistic way to keep your devices upgraded.
Articles related to macOS upgrades will be linked to this article.
There is now one upgrade method which is designed to handle all macOS versions and also erasing devices, as oppose to providing a new version per macOS release.
Other related pages are now superseded.