For every two voice & data nodes you’re managing, you already have 10 or more “facility nodes” that are soon to explode to 20 and beyond!
A facility node is an addressable device that can share information with a network. In the future, these devices will be anything that have power going into it. Keep in mind “power” may be solar power, such as a solar powered sensor. It might even be based on temperature differentials and kinetic energy such as with the opening of a door or window.
Power is not even a prerequisite for passive Radio-Frequency Identification (RFID) which will soon be embedded in everything from carpeting to drywall. These too are considered “facility nodes”, which must be managed.
But most of the network traffic will be derived from items such as chillers, air handling units, security cameras, and other data intensive items, including your servers and all the associated infrastructure supporting those servers.
Right now, most of the built space is being managed and controlled by facility managers. They may rely on some of your help today, but they are going to need a lot more of your help tomorrow!
(i) The normal design process has every discipline purchasing their own hardware...