WordPress updates are changes made to code. This may be the code of the core WordPress software, your theme, or your plugins.
WordPress updates show up in your admin dashboard as a bright red notification. They signal that software you have installed, whether activated or deactivated, is in need of a refresh.
With just a few clicks, you can push an update from a developer to your WordPress website. But we highly recommend taking safety precautions like doing a full backup of your site before doing updates, performing updates on a staging site first, or simply having your webmaster manage all your updates.