What is the consumer Phone Number Database advantage here? How does cookie syncing work? To give an example of how data is shared between parties, I will explain how cookie syncing works (sometimes called 'piggybacking'). Browsers do not allow trackers to read each other's cookies, this is only possible per domain. A tracker of a DSP Phone Number Database demand-side platform, a system with which online advertising campaigns are managed and purchased) cannot therefore by default read the cookie of an SSP ( supply side platform, on Phone Number Database which online publishers offer and sell available advertising spaces) with which they work.
But by synchronizing user IDs , trackers are Phone Number Database still able to exchange user data. This plays a major role in enriching data between platforms and remarketing visitors. First party data from DMPs ( data management platforms ) can still be shared with 3rd party DSPs with cookie syncing. DSPs and SSPs use this technique a lot, especially for Phone Number Database better retargeting. DSPs, DMPs and SSPs synchronize common user IDs with each other whenever a cookie is loaded. This happens in real time. User data is then periodically Phone Number Database exchanged between these systems. This is done outside of the browser and server-to-server .
The common user IDs enable Phone Number Database the systems to share personal and interest data with each other. Because a DSP can recognize the ad space and user ID that the SSP offers, a successful remarketing message can be offered (this is done via an Ad Exchange ). All because of the common user ID generated by cookie Phone Number Database syncing. As a result, remarketing between external adtech platforms is still possible. Due to the operation of cookie syncing, it is practically impossible for the visitor to check which parties are Phone Number Database going to use his data. Schematic operation of cookie syncing. The sync request synchronizes the user IDs between platforms aka piggybacking.