Impressions is a standard XDM data type that describes a marketing impression, which is a metric used to quantify the number of digital views or engagements for a piece of content such as an advertisement, digital post, or web page.
||String||A unique ID for the impression.|
||Integer||The number of times the impression item has been displayed to a customer.|
||Integer||The number of times the impression item has been selected or clicked.|
||String||The type of impression.|
For more details on the field group, refer to the public XDM repository: