Ad impression and click tracking with Snowplow

Snowplow enables comprehensive tracking of both ad impressions and ad clicks, providing valuable insights for users engaging in display advertising. Ad impression tracking can be implemented using either the Javascript tracker or a pixel tracker, with both methods allowing for the collection of detailed data points such as user IDs, ad identifiers, and campaign details. The Javascript tracker offers ease of integration and supports multiple ad units on a single page through namespacing, while the pixel tracker provides a lightweight alternative by composing a GET request with essential data points. For ad clicks, Snowplow utilizes a redirect mechanism that captures click events by rerouting the user through its collector, which records the event before redirecting to the intended target URL. This approach allows the inclusion of additional data points through the querystring to enhance the detail of tracked click events. Both methods support the creation of custom schemas to tailor the tracking to the specific data availability of different ad servers, and encourage contributions to Snowplow's Iglu Central schema registry.