Routine Maintenance
When you have to do this for a fleet of machines, you don’t want to immediately install updates as they come in. There’ll be way too time consuming. Instead, to effectively update and manage hardware, you do something called batch update. This means that once every month or so, you update all your servers with the latest security patches. You have to find time to take their services offline, perform the update and verify that the new update works with the service.
A good guideline is to keep your system secure by installing the latest security patches routinely. Staying on top of your security is always a good idea.