ref=/v1.19/blog/2021/discovery-selectors/discovery-selectors-vs-sidecar.png title="Discovery Selectors vs Sidecar Resource"><img class=element-to-stretch src=/v1.19/blog/2021/discovery-selectors/discovery-selectors-vs-sidecar.png alt="Discovery Selectors vs Sidecar Resource"></a></div><figcaption>Discovery Selectors vs Sidecar Resource</figcaption></figure><h2 id=wrapping-up>Wrapping up</h2><p>Discovery selectors are powerful configurations to tune the Istio control plane to only watch and process specific 