Topic summary
Volume license

Extracted from the Wikipedia article Volume licensing.
Overview
Volume licenses are not always transferable. For example, only some types of Microsoft volume license can be transferred, provided a formal transfer process is completed, which enables Microsoft to register the new owner. A very small number of software vendors specialize in brokering such transfers in order to allow the selling of volume licenses and keys. The most notable of these, Discount-Licensing, pioneered the sale of Microsoft volume licenses in this way.