Challenge
Advertising is a core revenue stream — yet ad system validation sits at the intersection of frontend rendering, third-party ad servers, player lifecycle events, and content metadata. Modern HTML5 video players add further complexity: adaptive bitrate switching, DRM-protected streams, and concurrent ad insertion create a combinatorial test surface that changes with every player SDK update or ad platform configuration change.
Approach
Developed a dedicated QA strategy for the ad ecosystem — mapping ad insertion points (pre-roll, mid-roll, post-roll, overlays) against player state events to detect timing conflicts, impression misfires, and ad skip logic failures. Combined automated browser-based tests with manual exploratory sessions targeting edge cases in player–ad coordination. Created a validation matrix across supported browsers, player versions, and content types.
Outcome
Systematic coverage of the ad delivery pipeline across player versions and content scenarios. Identified and resolved timing-related impression errors that had caused revenue discrepancies. The validation matrix became a shared reference for product, ad operations, and engineering during player updates and ad platform migrations.
