Baidu Union (百度联盟)

百度联盟 (Baidu Union) is described as Baidu's ad network promotion business, placing Baidu's promotional content onto matching pages across partner websites and apps. It uses audience targeting and keyword targeting to place content it describes as competitive on pages relevant to each targeting method.

The business is framed as bringing good returns to both advertisers and website or app owners through this matching process, operating across the App and Web channels. Its homepage requires JavaScript to load the underlying ad-serving system, and prompts visitors without it enabled to upgrade or switch browsers to continue.