  Quantum applications are most often hybrid, i.e. they are not only made of
implementations of pure quantum algorithms but also of classical programs as
well as workflows and topologies as key artifacts, and data they process. Since
workflows and topologies are referred to as orchestrations in modern
terminology (but with very different meaning), two orchestrations that go
hand-in-hand are required to realize quantum applications. We motivate this by
means of a non-trivial example, sketch these orchestration technologies and
reveal the overall structure of nontrivial quantum applications as well as the
implied architecture of a runtime environment for such applications.
