Changes in Compute Resources and ApplicationsConverged, Disaggregated, Hyperconverged, and ComposableApplications Virtualized and DisaggregatedThe Impact on Network DesignThe Rise of East/West TrafficThe Rise of Jitter and DelayPacket Switched FabricsThe Special Properties of a FabricSpine and LeafTraffic Engineering on a Spine and LeafA Larger-Scale Spine and LeafDisaggregation in NetworksFinal Thoughts on DisaggregationFurther ReadingReview Questions