by Cotton Delo, Ad Age

“Facebook’s ad exchange represents a huge opportunity for data firms and retargeters that can layer their data over Facebook’s ad inventory. But what’s fascinating is how — and to whom — Facebook has granted access to it.

The first set of partners, AdRoll, AppNexus, Dataxu, MediaMath, TellApart, Triggit, Turn and The Trade Desk, and more recently, Criteo, Kenshoo, Nanigans, Optimal, Rocket Fuel and X+1, are all startups.”

Read the full article on AdAge.com.