How impressions work

Version V0.0.1

An impression is counted when an ad is served to a viewer.

Rules:

• Each ad type (banner or slim text) tracks impressions separately.
• Purchased impressions add to the campaign’s impressionsPurchased.
• As ads are served, impressionsDelivered increases.
• Remaining = purchased minus delivered.

Impressions are visibility units. They do not change verification status.