Glossary
Quartiles
Progress checkpoints at 25%, 50%, 75% and 100% of a video.
Each quartile fires its own tracking URL, which is how completion rates and drop-off curves are built. Missing quartiles usually indicates a player or beacon problem, not real drop-off.
Related terms
Start serving for the price of a coffee run.
Fund a $50 wallet, traffic your first campaign and pay only for what you serve.