Optimal technicians' allocation problem with respect to failure reparation

The reparation of failures should be done as fast as possible to minimize the impact to the users as well as any penalties agreed in the Service Level Agreement. However, in order to minimize costs, the number of technicians as well as their locations should be minimized to keep the Total Cost of Ownership low. This compromise between cost and time has been studied within an optimization problem and different case studies have been considered