The top 5 promotional videos on YouTube in Switzerland from January to March 2021 are, in descending order:
1. Swisscom: Marco Odermatt - Episode 2: How much digital technology goes along for the ride
2. Swisscom: Swisscom blue TV Sport Quiz - Ski Edition
3. Buitoni SwitzerlandEpisode 1 - We need to talk about YOUR MOTHER
4. audi switzerlandThe Drive of Xavier de Le Rue
5. Digitec: Digitec GIFs illuminate Swiss cities - The Making Of
How does the YouTube Ads Leaderboard ranking come about?
To determine the top 5, YouTube measured the number of views on YouTube advertising videos from Switzerland in the 1st quarter of 2021. For the ranking, only videos that could show a minimum share of unpaid views were considered. Every quarter, Google releases those YouTube ad videos that are most popular with YouTube viewers. The ad ranking is determined by an algorithm that takes into account paid and organic views as well as audience engagement.