Upon the user’s arrival, the website or app sends a request to an ad exchange. An ad exchange is a platform that acts as a marketplace, connecting advertisers with publishers World health organization have available ad spaces. This request contains information about the user, the context of the visit, and https://tysonkmjdv.wikibyby.com/799626/top_jeweils_fünf_zielgruppensegmentierung_urban_news