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Retargeting
Advertising
Ad technique using identifiers to deliver ads based on prior site/app interactions.
Definition
Retargeting uses tracking identifiers and event logs (views, cart adds) to build audiences and serve ads later on other sites/apps via ad networks.
In plain English
Ad technique using identifiers to deliver ads based on prior site/app interactions.
Why this matters
Why it matters: It depends on cross-site tracking and data sharing across advertising partners.
Example
Example: Pixel logs product ID; ad platform later targets the same user with that product creative.