Mixer</strong> to expose a single consistent API, independent of the
infrastructure backends in use. The exact set of adapters used at runtime is determined through operator configuration and can easily
be extended to target new or custom infrastructure backends.</p><p>In order to achieve Knative scale-from-zero, we use a Mixer <a href=https://github.com/istio/istio/wiki/Mixer-Out-Of-Process-Adapter-Dev-Guide>out-of-process adapter</a>
to call the Autoscaler. Out-of-process adapters for Mixer allow develope