What term describes the controlled execution of transporting contraband under law enforcement supervision?

The term that best describes the controlled execution of transporting contraband under law enforcement supervision is "Controlled Delivery." This strategy involves law enforcement allowing the movement of illegally trafficked goods, such as drugs or stolen property, to gather intelligence, identify traffickers, and make arrests. The operation is conducted in such a way that authorities maintain oversight of the contraband's transport to ensure that it leads to further investigation and potential apprehension of individuals involved in criminal activities.

In contrast, surveillance operations involve observing individuals or locations to gather information without direct interference, while drug interdiction refers to efforts to intercept and prevent drugs from entering a region. Covert operations involve secret missions that are typically concealed from the target, but may not specifically refer to the transport of contraband under supervision. Therefore, "Controlled Delivery" is the precise term that encapsulates the concept described in the question.