Microsoft Invest - Partner fees
If you need to reserve a portion of your budget for third-party costs--costs owed to parties other than the publisher--you can define this information with partner fees. Fees can be tracked on a CPM, cost share, or revenue share basis, and can be applied to multiple advertisers and line items, if desired. A single line item or advertiser can have multiple fees applied.
Common fees you might need to budget for are:
Advertiser ad serving fees and creative hosting fees, which are charged for delivering a line item's creative assets.
Data fees that are not cleared by Microsoft Advertising as part of the Data Marketplace.
Post-bid reporting fees - for example, using a pixel to track where impressions are served and then auditing retroactively how many transactions violated brand safety standards.
Revenue share agreements with other ad tech partners.
Incremental fees charged by an intermediary to the advertiser, such as a managed service fee or consulting fee.