roservices are logically separate but not independent. They are usually closely interdependent and taking them apart introduces many new concerns such as need for mutual authentication between services. Istio directly addresses most of those issues.</p><h2 id=dependency-ordering-problem>Dependency ordering problem</h2><p>An issue that arises due to application decomposition and one that Istio doesn’t address is dependency ordering &ndash; bringing up individual services of an application in an order that 