Today's large content providers (CP) are busy building out their service infrastructures or "peering edges" to satisfy the insatiable demand for content created by an ever-expanding Internet edge. One component of these serving infrastructures that features prominently in this build-out is their connectivity fabric; i.e., the set of all Internet interconnections that content has to traverse en route from the CP's various "deployments" or "serving sites" to end users. However, these connectivity fabrics have received little attention in the past and remain largely ill-understood.