ve often been
overlooked and ignored in its entirety when it comes to weaving a mesh
across many clusters, different environments, and integrating external
services. The introduction of a caching DNS proxy in the Istio sidecar
agent solves these issues. Exercising control over the
application’s DNS resolution allows Istio to accurately identify the
target service to which traffic is bound, and enhance the overall
security, routing, and telemetry posture in Istio within and across
clusters.</p><p>Smart DNS