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Business Units

The top-level business unit is automatically created when your Microsoft Dynamics CRM system is provisioned and has the name of your organization. (This is the only one that does not have a parent.)

A business unit can be defined as a subsidiary, a division, an operating unit, a branch office, and so forth, depending on how your specific organization is structured.

There is nothing wrong with having a single business unit (the default) and every user in your organization sitting in that one business unit. Although not a rule, it is often the case that, for smaller organizations, it makes sense to have everyone in the same business unit because the lines of demarcation between job roles and responsibilities are often blurred and ...