Where is the data collected from a tracking tag typically stored?

The data collected from a tracking tag is typically stored in a data management platform (DMP). A DMP is specifically designed to aggregate and analyze data from various sources, including tracking tags, to create audience profiles and improve targeting for advertising campaigns. By centralizing data from multiple sources, the DMP allows advertisers to better understand user behaviors and preferences, facilitating more effective and data-driven advertising strategies.

The other options represent different storage methods, but they do not align as closely with the function of a DMP in the context of programmatic advertising. While an advertiser's server might store some data, it is not specifically focused on audience insights and data aggregation like a DMP. A data warehouse is more generalized for storing large amounts of data, which may not be tailored for audience targeting needs. User devices store some local data, but this is often limited to the user’s immediate browsing context and does not serve broader audience analysis purposes as a DMP would.