Integral Ad Science

Integral Ad Science — IAS — was founded in 2009 as a media quality measurement company focused on the same fundamental verification problems that define the ad verification category: viewability, brand safety, and invalid traffic detection. IAS competes directly with DoubleVerify in a market where large advertisers often run both vendors simultaneously to triangulate measurement and satisfy agency and client reporting requirements. The company went public in 2021 and serves major global advertisers, agencies, DSPs, and publishers with measurement and optimisation products across display, video, social, and CTV environments.

IAS operates through JavaScript measurement tags on web and pre-bid targeting segments integrated into DSPs. The Total Media Quality product pre-filters publisher inventory at the bid level, preventing ad spend from flowing to placements that fail viewability, brand safety, or fraud thresholds before the impression is purchased. Post-bid measurement audits the impressions that did deliver and provides the viewability, completion rate, and fraud metrics used in campaign quality reporting. Publisher certification programmes use IAS data to provide advertisers with inventory-level quality assurances.

IAS infrastructure problems create a dual impact on ad campaigns: the pre-bid filtering layer and the post-bid measurement layer can fail independently with different consequences. Pre-bid segment failures cause DSPs to purchase inventory without the IAS quality filter applied — meaning spend goes to placements that would normally be blocked, including potentially brand-unsafe or low-viewability inventory. Post-bid measurement tag failures create unmeasured impression gaps in campaign reports; those impressions appear to have delivered without quality verification, producing a measurement coverage gap that breaks weekly and monthly reporting roll-ups. The IAS dashboard failing to update leaves campaign managers unable to monitor quality trends in real time during active flights.

Outage.gg tracks Integral Ad Science platform status using real-time community reports from media buyers and ad operations teams. If measurement is not reporting, pre-bid segments are not filtering, or the dashboard is unavailable, the live status page shows current impact.