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.
Division vs Subsidiary. A division is a part of a business entity. This means that a division, although it operates in a different name, is still a piece of the entity itself. On the other hand, a subsidiary is an entirely different company, a separate one, which is owned by another usually bigger entity.