User tagging
DSPs can recognize users who have visited a site. This helps DSPs understand user interests and serve relevant ads.
When users visit a site, they can be tagged with a custom string of up to 200 characters. This is a coordinated process involving the site, the RTB host, and the DSP.
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A computer, laptop, or smartphone sends a request to the site. The page contains an embedded pixel, which is a snippet of code designed to pass requests to the RTB host.
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From the page, the pixel sends a request to the RTB host to tag the user. This request is unrelated to serving ads and doesn't trigger an auction.
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If an error occurs, the request returns an HTTP 404 response.
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If tagging is successful, the request returns an HTTP 200 response.
Request format:
http://an.yandex.ru/mapuid/{dsp-name}is/{user_ID}
Request parameters
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Parameter |
Description |
|
dsp-name |
DSP ID on the RTB host. To register, send the DSP name to your manager or to newpartners@yandex-team.ru. |
|
user_ID |
User tag inserted by the DSP. The RTB host associates this data with the user and passes it to the DSP via the buyeruid parameter in the next ad serving cycle for the user. |
Sample request for AdMaster DSP
http://an.yandex.ru/mapuid/admasteris/AE313-ASCCX-353WA
When a user opens a page containing this link, the browser makes a GET request to the RTB host to associate the data with that user.