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Client API
When considering a program that uses Gurobi Remote Services, you can think of the optimization as being split into two parts: the client(s) and the Compute Server. A client program builds an optimization model using any of the standard Gurobi interfaces (C, C++, Java, .NET, Python, MATLAB, R). This happens in the left box of this figure:
![\scalebox{1.0}{\includegraphics[width=8in]{graphics/csapi}}](https://gurobi-dev.flywheelsites.com/wp-content/plugins/hd_documentations/documentation/9.0/remoteservices/img4.svg)
All of our APIs sit on top of our C API. The C API is in charge of building the internal model data structures, invoking the Gurobi algorithms, retrieving solution information, etc. When running Gurobi on a single machine, the C API would build the necessary data structures in local memory. In a Compute Server environment, the C layer transparently ships the data off to the Compute Server. The Gurobi algorithms take the data stored in these data structures as input and produce solution data as output.
While the Gurobi Compute Server is meant to be transparent to both developers and users, there are a few aspects of Compute Server usage that you do need to be aware of. These include performance considerations, APIs for configuring client programs, and a few features that are not supported for Compute Server applications. These topics will be discussed later in this document.
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