The vehicle routing problem (VRP) is a combinatorial optimization and integer programming problem which asks "What is the optimal set of routes for a fleet of vehicles to traverse in order to deliver to a given set of customers?"
I am expert to model the real-world problem as VRP mathematical model and solve them using Software such as:
MATLAB
Python
C++
Gurobi
Pyomo
CVX
Mosek
CPLEX
GAMS
and so on.