Contextual advertising (also called contextual targeting) is a form of advertising that targets users and serves ads based on the content they’re currently interacting with.
Ads are served automatically to match the context of the website or app the person is using, therefore the ads are showing in-context to what the user is doing.
Here are some examples of contextual advertising:
To determine context as accurately as possible, contextual advertising goes beyond just the app or website topic, and also leverages signals like Wi-Fi data, app metadata, location, and device specifics.
Contextual advertising is completely privacy-compliant, so it gained additional popularity amidst the introduction of ATT and other privacy changes.