SBA's mentor-protégé program pairs a small, often newer business with a larger or more experienced mentor that provides technical, financial, or management help under a formal, SBA-approved agreement. The real prize for a lot of proteges is what the relationship unlocks: an approved mentor-protégé pair can typically joint venture together on set-aside work without the small partner getting flagged as affiliated with, and too large because of, its mentor. Other agencies, including the Defense Department, run their own separate mentor-protégé programs with their own rules, so check which one a specific opportunity is actually referring to.

In a sentence

"Company A and Company B are approved mentor and protégé under SBA's All Small Mentor-Protégé Program." That approval is the paperwork that makes their joint venture legitimate in SBA's eyes, not just a marketing label the two companies chose for themselves.