>Route rules control how requests are routed within an Istio service mesh. For example, a route rule could route requests to different versions of a service. Requests can be routed based on the source and destination, HTTP header fields, and weights associated with individual service versions. The following important aspects must be kept in mind while writing route rules:</p><h3 id="qualify-rules-by-destination">Qualify rules by destination</h3><p>Every rule corresponds to some destination service identifie