Documentation is an often underestimated and overlooked task in network design. It provides the guidance for testing, diagnosing problems, and upgrading or expanding the network in the future. In your post:

Describe a business environment based on networking technologies that you are familiar with, either professionally or personally.

Identify three roles within that environment that should be involved in the documentation process (at least one role must be from the business side of the organization, as opposed to the technical side). Why should these roles be involved? What organizational benefits (business or technical) stem from each role's involvement?

How would proper documentation benefit each of the individuals in their role during design, testing, and maintenance phases?