Welcome to IBM® ILOG® AMPL—a comprehensive, powerful, algebraic modeling language for problems in linear, nonlinear, and integer programming. AMPL is based upon modern modeling principles and utilizes an advanced architecture providing flexibility most other modeling systems lack. AMPL has been proven in commercial applications, and is successfully used in demanding model applications around the world. AMPL helps you create models with maximum productivity. By using AMPL's natural algebraic notation, even a very large, complex model can often be stated in a concise (often less than one page), understandable form. As its models are easy to understand, debug, and modify, AMPL also makes maintaining models easy.