One part of an efficient logistics solution for service technician or product delivery is reducing the time needed to develop the schedule.
The other part of an efficient logistics solution is a schedule that maximizes work time while minimizing drive time.
From the Walzik blog...
In Wikipedia, the definition of the last mile is "Last mile is a term used in supply chain management and transportation planning to describe the movement of people and goods from a transportation hub to a final destination in the home."
Artificial intelligence is a very powerful thing. Using machine learning, an application that finds optimal solutions for last mile supply chain problems can produce a very cost effective set of routes in a very short time. The problem with many applications is that only the one "best" solution is offered to the user.