Enterprise IT has traditionally operated using a strict command and control model. BEHAVIOUR is determined by configuration being precisely set over a distributed infrastructure. If something needs to be amended, operators propose changes to the configuration.
There are a few drawbacks to the command-and-control model. First, infrastructure becomes quite brittle when it is dependent on the kind of operational precision required to specify specific behaviour across diverse infrastructure. This is a big reason that many enterprises use frameworks like ITIL. When change is difficult, the best you can do is inspect in excruciating detail.