There are a number of reasons why we continuously change our enterprise applications, but sometimes it's hard to explain to the requester why another change would be so costly and time-consuming to implement. IT leaders who want to be fully prepared for inevitable changes in the corporate software infrastructure should do their best to avoid system coupling on both business and technological levels.
A modern enterprise information system (EIS) consists of hordes of applications bound together to support business activities in the enterprise. The degree of application coupling identifies the difficulty of making changes to them. Although coupling has been always used to describe the connections between application's components, it can be also used to describe relations between applications within the entire EIS.
