Infinity Fabric (IF) is a proprietary system interconnect architecture that facilitates data and control transmission across all linked components. This architecture is utilized by AMD's recent microarchitectures for both CPU (i.e., Zen) and graphics (e.g., Vega), and any other additional accelerators they might add in the future. The fabric was first announced and detailed in April 2017 by Mark Papermaster, AMD's SVP and CTO.

Finally got around to filming a video about it. Loads more info: http://mitxela.com/console