Since they are not technical people, it's a waste of time to try to explain what's in the Blackbox at hand.
Focus instead on the consequences of the choices offered. As in "If you go with choice number 1, it'll cost the company 2 millions dollars and there is a high risk of delay. Choice number two, on the other hand, means good integration with our infrastructure, cost less and offers better chances of success." They can understand these choices.