- Authorization
- Transparent costs
- Comparable quality
- Measured outcomes
Use this sequence to organize the investigation. Confirm the details in the affected platform and campaign.
A shorter path is not automatically a better path for every campaign. A low CPM does not establish efficiency if useful delivery or quality is poor, and an authorized seller record does not establish viewability or outcomes.
This guide is an operational evaluation framework. The linked ANA research provides industry context, while the numerical comparison below is fictional and should not be treated as a market benchmark.
Define the inventory and decision first
Identify the publisher, format, market, and campaign outcome being compared. Establish whether different paths genuinely expose comparable inventory or include different placements and audiences.
Choose the decision you are trying to make, such as investigating unexplained cost differences or reducing redundant requests. Without a defined objective, a path comparison can become a table of unrelated averages.
Compare useful delivery with consistent definitions
- Match inventory scope, device, time window, and relevant buying terms.
- Record what the quoted cost includes and which fees are observable.
- Compare request coverage, bids, wins, and recorded impressions.
- Review measurable and viewable counts where relevant.
- Note invalid-traffic filtering, reporting maturity, and unavailable data.
Use an explicit efficiency calculation
Fictional path A costs $100 for 40,000 comparable viewable impressions. Path B costs $120 for 60,000. Cost per thousand of those impressions is $2.50 for A and $2.00 for B.
This calculation favors B on that defined measure only. It does not prove better conversion performance, equivalent audiences, or a causal improvement. Verify those assumptions before changing allocation.
Use research as context, not a universal target
ANA's December 2023 supply-chain study summary discusses transparency and governance in open-web programmatic buying. The practical implication for this checklist is to request understandable evidence about the path rather than evaluate it only through an aggregate buying dashboard.
Do not apply a historical study average as the expected outcome of your own campaign. Differences in sample, inventory, buying arrangements, and time period matter.
Validate a proposed allocation change
Use an authorized, limited comparison with a clear observation period and rollback plan. Evaluate the original objective alongside delivery and quality constraints. A path that looks cheaper may also have reduced access to the inventory needed by the campaign.
Document which conclusions are supported, which depend on unavailable data, and what should be monitored after the decision.