The attribution problem
Downloads are not listens. Listens are not completions. Completions are not actions. Traditional pixel attribution does not work in an audio environment.
What to actually track
For direct response: promo-code redemption, vanity-URL traffic and branded-search lift. For awareness: brand-lift research, social listening and audience-overlap analysis.
Host-read vs dynamic insertion
Host-read ads often outperform pre-produced dynamic spots on recall and trust. They cost more and are harder to scale, so the right choice depends on the brief.