Software Defined Datacenters (SSDC) is a term invented to describe new datacenter networking systems and their connection to server systems centralized management and deployment. SSDC is leveraging centralized management and deployment of networking devices and server hypervisor hosts in a way then their configuration is seamlessly configured in order to automate, simplify and speed-up IT services deployment.

Here are some articles regarding some of the most popular SDDC solutions, how they work and what are the caveats behind building SDDC solutions:

ACI with controller

Cisco ACI Fabric with 2 Spine switches, 8 Leaf switches, APIC controller cluster of 3 and an ESXi host redundantly connected to two Leafs