Look, there is actually no publisher AD system in this industry. The publisher AD system is very simple: put this impression at this time. It's just the rotation process.

其实严格来说，这个行业里并不存在媒体广告系统，媒体广告系统其实很简单：在特定的时间曝光指定的广告，就是个轮播过程。

youdao

Ad impression volume was up46%, while average price per ad was down 4%, partly driven by lower prices in developing markets.

FORBES: LIVE: Facebook's Q4 Earnings Beat Forecasts But Shares Fall

With this accreditation, customers can be assured that Adobe's methods for generating ad impression statistics are in accordance with industry-established guidelines published by the MRC.

ENGADGET: Adobe announces Project Primetime video platform, Highlights available now for iPad (update: video)

Adobe Auditude has received the Media Rating Council's (MRC) accreditation of the Digital Video Ad Impression Statistics for ads delivered by its ad management and monetization platform.

ENGADGET: Adobe announces Project Primetime video platform, Highlights available now for iPad (update: video)