Facebook rolls out header bidding after partnering with five adtech players

Facebook has announced its entry into header bidding with a partner-first approach that will open its Audience Network to web publishers working with five major ad-tech players.
The company confirmed today (22 March) that header bidding will available to mobile web publishers via its partnership with five adtech companies – AppNexus, Index Exchange, Media.net, Sonobi and Sortable.
Header bidding has grown in popularity due to its more transparent nature and ability to increase revenue