Floodlight is a system Search Ads 360 and Campaign Manager use to track and report conversions.
A Floodlight tag is an iframe or image tag that you install on a conversion page in the advertiser's site. When a customer lands on the conversion page, the tag sends data about the conversion to Search Ads 360 and Campaign Manager. The conversion data is stored in a Floodlight activity, which you can include in reports.
An alternative to using a Floodlight tag is the global site tag with a Floodlight event snippet. The global site tag makes implementing Floodlight tracking easier. You'll also benefit from the latest dynamic features and integrations as they become available. Learn more.