GigaOm also points out that FireChat's a kickass app for big summer festivals like Burning Man, since cell reception is notoriously garbage and it's hard to find friends or locate stuff like water or beer tents when you can't use iMessage or Twitter.
Business Unit or BU refers to a division, facility or department of an organization. 1  Examples of business units include retail outlets and human resource department.
Divisional Structure. These types of organizations divide the functional areas of the organization to divisions. Each division is equipped with its own resources in order to function independently. There can be many bases to define divisions.