What is Business Partner?

Legal Definition
A business partner is a commercial entity with which another commercial entity has some form of alliance. This relationship may be a contractual, exclusive bond in which both entities commit not to ally with third parties. Alternatively, it may be a very loose arrangement designed largely to impress customers and competitors with the size of the network the business partners belong to.
-- Wikipedia
Legal Definition
Business partner is a term used to denote a commercial entity with which another commercial entity has some form of alliance. This relationship may be a highly contractual, exclusive bond in which both entities commit not to ally with third parties.