Premises
A premise is created for every location to which your company supplies service. On a premise is maintained geographic information like:
The address.
Characteristics that determine tax jurisdictions.
Descriptions of unusual situations associated with a property.
The list goes on...
Most premises have at least one service point because, without a service point, there are no services supplied to the premise. A premise without service points may exist; you just won't be able to do much in the system with such a premise.
Fastpath: 
Refer to Maintaining Premises for more information about premises.