The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third party advertisers. </p> <p> </p> Cookie Provider Purpose Type Expiry _fbp pipglobal.com Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers. HTTP 1 Day ads/ga-audiences google.com Used by Google Ad Words to re-engage visitors that are likely to convert to customers based on the visitor's online behaviour across websites.