Index Exchange

Index Exchange is a supply-side platform (SSP) where publishers sell web, app and streaming TV ads by auction or deal, paid through one fee per transaction.

Index Exchange runs an advertising exchange where media owners put ad impressions up for sale and marketers bid on them in real time. It works on the sell side of programmatic advertising, so publishers, app makers and streaming TV services are its direct customers. Buyers reach that supply through the major DSPs. The platform belongs to Index Exchange Inc. of Toronto, which grew out of the Casale Media ad network. The core exchange carries web display, online video, streaming TV and mobile app formats in one system. Its deal tools cover 1:1 deals, programmatic guaranteed buys, always-on deals and inventory packages that curate open market supply under a single deal ID. Index Marketplaces brings data partners' curation and measurement to the sell side. Index Cloud is a neutral compute environment where partners run their own technology inside the exchange. Client Audit Logs record every auction event, while policy specialists review creatives and a threat management team blocks malware. The exchange suits publishers and media owners who trade inventory programmatically and want deals, curation and auction-level data from one partner. Streaming TV publishers get precise delivery and ad podding signals, and app developers can sell rewarded video and interstitials. Agencies and brands use it from the buying side to activate curated packages and publisher first-party segments. Index Managed Demand sources extra demand for the media owners who join it. Media owners agree terms with its sales team and pay one transaction fee, a take rate that varies by auction. On the web, ad operations teams connect it through Prebid, the open-source header bidding wrapper, and in apps through Prebid Mobile. Trading teams then package premium placements into deals and follow results in standard or custom reports. Data teams pull Client Audit Logs through the API to check clearing prices or feed another reporting platform. Partners such as Chalice AI bring their models through Index Marketplaces, which is how dentsu turned media quality into a buying signal. Media owners who want every impression's price on record are the teams it is built around.