Floodlight conversion windows

Floodlight only records conversions for users who have previously seen or clicked on a Campaign Manager 360 ad within a conversion window, which is a period of time you specify.

How it works

When a user loads a web page containing Floodlight tags, the ad server accesses the user's cookies or device ID. Campaign Manager 360 then runs an overnight process for each Floodlight impression to check if there is a match for any previous impressions or clicks on Campaign Manager 360 ads within the conversion window. If no match for the cookies or device ID is found, the activity record is discarded.

The conversion window values start at 0 days. That is, a window of 0 counts events within 24 hours, a window of 1 counts events within 48 hours, a window of 2 counts events within 72 hours, and so on.

The conversion window for an impression or click is based on the value set for the placement where it took place. If a user has clicked or viewed ads in multiple placements, Campaign Manager 360 uses the most recent click that falls within the conversion window of the placement where the ad was served. If no click is available, then the most recent impression is used.

Example

Bob's Widgets is running a campaign across Placement A and Placement B. A user sees the ad called "Love the Lemur" in Placement A. A few minutes later, the user sees the ad called "Pet the Panda" in Placement B and decides to click, because pandas are adorable. Ten days later, the user visits the advertiser's site and makes a purchase, triggering a Floodlight impression for a sales activity.

Placement A's conversion window for impressions is 14 days. Placement B's conversion windows for clicks is 5 days, so the click can't be used for calculating Floodlight data. However, Placement B's conversion window for impressions is 14 days. As such, Floodlight records the impression as a sales activity and associates it with the impression of the ad "Pet the Panda" served to Placement B.

Note that for publisher tags, the conversion windows for the advertiser are used. To avoid discrepancies, we recommend you set conversion windows at the advertiser level and use default values for placements.

If you share your Floodlight configuration across Campaign Manager 360 and Search Ads 360, then changing the conversion window in Campaign Manager 360 will also change the conversion window used for Search Ads 360.

Conversion window settings

Conversion windows can be set for an account, advertisers, campaigns, placements, and sites. The maximum conversion window is 90 days. 

Conversion windows and overrides

By default, campaign and placement settings inherit the conversion windows set at the account or advertiser levels. If you change an advertiser's conversion windows, the changes are reflected in placements.

Learn about overrides

Conversion window overrides can be set for placements and campaigns. An override value can't be greater than the value set for the advertiser. For example, if the conversion window for clicks for the advertiser is 10 days, you can create a placement override of 7 days, but not a placement override of 14 days.

Placement overrides

When you set an override in a placement, the placement's value is saved, regardless of changes at any other level. There's no way to make batch changes to placement conversion windows that use overrides.

If you remove the overrides from the placement, it will revert to inheriting the advertiser's conversion windows. Subsequent changes to the advertiser's values will be inherited by the placement.

Campaign overrides

Campaign overrides set the conversion windows for new placements that you create manually in Campaign Manager 360.

When you create a new placement, campaign override values set the default values as overrides. This means subsequent changes to campaign values won't be inherited by existing placements.

Placements created by a Media Plan import will respect overrides. 

Site conversion windows

You can set conversion windows for sites. If no campaign override is set, the site conversion window is shown as the value when you're creating a new placement. To use the site value in the placement, you must enable an override. Otherwise, when you save the placement, it will revert to inheriting the conversion window from the advertiser.

Because site conversion windows are difficult to apply, it's generally best not to set conversion windows at the site level.

Mixed inheritance

All inheritance rules apply separately for each conversion window. For example, a placement could have an override set for its conversion window for clicks, but not for impressions or Rich Media events. Similarly, you can set a value for some, but not all, types at the site level. You can also set overrides for some, but not all, types at the campaign level.

Conversion windows and publisher tags

Floodlight uses advertiser conversion windows to decide whether to serve publisher tags. As such, if a placement has conversion window overrides, you might serve the publisher tags more often than you count a conversion.

For example, the conversion window for clicks is 10 days at the advertiser level, but 3 days at the placement level. A user clicks on an ad on Site A, then visits a Floodlight-tagged webpage 5 days later. No conversion is counted because it's outside the placement's conversion window. The publisher tags for Site A are served based on the advertiser's conversion window.

If you use publisher tags to serve tracking tags for your sites, it could lead to a discrepancy over the number of conversions a site has provided. To avoid this problem, avoid using overrides in your placement conversion windows.

Effects of changing placement conversion windows

You can change conversion windows to make them longer or shorter. The changes are immediate and only applied to any new Floodlight impressions. The number of conversions counted before the change is not effected.  

Example: Lengthening conversion windows

You have a placement with an impression conversion window of 5 days. Six days ago, a user saw one of your ads. Today that user visited your Floodlight-enabled web page. A Floodlight impression is recorded, but it's not a conversion because it's outside the conversion window.

Subsequently, you change the impression conversion window to 10 days. This change has no effect on the Floodlight impression that already occurred. The next day, the user returns to your web page, triggering another Floodlight impression. It has now been seven days since the user saw your ad. Since the impression conversion window is now 10 days, a conversion is counted.

Example: Shortening conversion windows

You have a placement with a conversion window of 10 days for impressions. Four days ago, a user saw your ad. Today that user visited your Floodlight-enabled web page, and a conversion was counted.

Subsequently, you change the impression conversion window to 3 days. This change has no effect on the conversion that was previously counted. However, when the user returns to your web page the next day, no conversion is counted, because the conversion window is now shorter.

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