What does tracking IDs help to associate?

Tracking IDs serve as unique identifiers for a specific Google Analytics property, enabling the collection and organization of data related to that property. When a tracking ID is implemented on a website, it associates the data collected—such as page views, user sessions, and interactions—with the corresponding Google Analytics account and its specific property. This allows website owners and marketers to analyze their website traffic and user behavior effectively through the Google Analytics interface.

By contrast, the other options involve different types of data associations that tracking IDs do not directly facilitate. User feedback and satisfaction ratings pertain to qualitative data not captured by tracking IDs. Visitor counts linked to ad campaigns are tracked through campaign tagging and attribution models, rather than a tracking ID. Similarly, page load times and server responses are performance metrics not inherently tied to the unique identification of a Google Analytics property, but rather to server-side metrics and performance monitoring tools.