OPL Development Studio is an optimization modeling system for mathematical programming and constraint programming. Optimization models are written in OPL, the Optimization Programming Language, which was originally developed by Pascal van Hentenryck. OPL Development Studio provides an interpreter for OPL models, a scripting language, an Integrated Development Environment (IDE), and Application Programming Interfaces (APIs) to embed OPL models into standalone applications. It uses CPLEX to solve math programming models.