We present an overview introduction to D-Wave’s hybrid solver service (HSS). HSS contains three solvers — BQM, DQM, and CQM — that can be applied to quadratic optimization problems defined on discrete or continuous variables. The most general CQM solver provides support for problems defined on binaries, integers, and reals, as well as a convenient notation for expressing linear and quadratic constraints. All solvers in the HSS are designed to integrate classical and quantum solution methods, exploiting the power of both computing paradigms. Download the white paper.