Information Technology Infrastructure Library (ITIL)
As companies grow they enevitably reach a point of saturation from which further growth is impossible. Whether it be a restaurant that suddenly needs a larger kitchen, or a grocery store that needs more parking, or even a website that just needs more bandwidth.
ITIL is a system of standardizing IT Infrastructure so that as companies grow and merge, and splinter and such, there infrastructure continues to function in a flexible, functional format. There is a standard set of instructions for how to deal with a problem, even down to the definition of what a problem is. There are in depth detailed methods of proper Configuration Managment, Change Management, Release Management…etc, all put together with the design of helping folks take care of things in the simplest most standardized way possible. Some of the provisions are meant to minimize downtime by ensuring that upgrades, backups, and virus scans are run at the least busy time of day (or over the weekend if possible).
The ITIL framework is simple enough to be applied to a single server environment, but it is designed to handle the complexity of companies that are growing from having an IT person to having an IT department to having an IT division etc…