tworking</h2><ul><li><p><a href=/v1.3/docs/tasks/security/mutual-tls>Mutual TLS</a> Permissive mode is enabled by default.</p></li><li><p>Pilot performance and scalability has been greatly enhanced. Pilot now delivers endpoint updates to 500 sidecars in under 1 second.</p></li><li><p>Default <a href=/v1.3/docs/tasks/telemetry/distributed-tracing/overview/#trace-sampling>trace sampling</a> is set to 1%.</p></li></ul><h2 id=policy-and-telemetry>Policy and telemetry</h2><ul><li><p>Mixer (<code>istio-telemetry<