Advertisement exchanges. Whereas advert networks provide the advertisement inventory for publishers, advert exchanges Permit publishers promote their particular ad stock directly to advertisers via advert auctions.垂直类广告网络根据品牌广告主的主流需求，来采购相关的垂直媒体，譬如汽车类广告有很大的投放预算，有些广告网络就包断相应的汽车类媒体频道资源，整合成一个媒体包卖