Google OR-Tools - Combinatorial Optimization OR-Tools provides specialized solvers for hard combinatorial problems. Its crown jewel is the CP-SAT solver, which uses Constraint Programming and Satisfiability techniques to find optimal solutions for scheduling and resource allocation problems that are impossible for standard linear solvers. When to Use - Vehicle Routing (VRP) : Finding the best paths for a fleet of vehicles to deliver goods. - Scheduling : Creating shift rosters, project timelines, or job-shop schedules. - Bin Packing : Fitting objects of different sizes into a finite number of…