We introduce MOS, a software application designed to facilitate the deployment, integration, management, and analysis of mathematical optimization models. MOS approaches mathematical optimization at a higher level of abstraction than existing optimization modeling systems, enabling its use with all of them. The sole requirement to harness MOS is a simple annotation of the code specifying the formulation of an optimization model. With this, the model becomes accessible to humans through the automatic generation of a user interface, and to machines through an associated API and client libraries. All this is achieved while avoiding the ad hoc code typically required to obtain such features.