It's a common requirement for organizations designing systems for military and aerospace markets to produce a proof-of-concept (PoC) prototype.
The purpose of the PoC is to demonstrate that an algorithm, piece of intellectual property (IP), or system produce the correct results according to a target specification. In the Mil-Aero market, developing the PoC can be a critical step in the process of bidding for and winning government contracts. Design teams also use PoCs to demonstrate the viability of their products to potential investors and customers in advance of product availability. The PoC serves as a tangible deliverable and physical proof that a conceptual idea actually works.