I am very happy to note that 42% of all vCloud Architecture Toolkit (vCAT) authors are VCDX.
To quote John Arrasjid - "I was adamant that we take a VCDX approach and that was extended further by specific actions of the VCDX who participated. A great example is Implementation Examples led by Thomas Kraus."
If you aspire to VCDX this is a great resource, if you are VCDX and aspire to VCDX-Cloud it's going to be indespensible. Get it here: www.vmware.com/go/vcat