What if we could boost the ecological transition, one click at a time? A look back at our collaboration with the world's largest summit for the planet: ChangeNOW

Three days. Thousands of changemakers gathered in Paris.
A challenge: transforming inspiration into concrete action.

When ChangeNOW approached us, the findings were clear: the event was a hit in terms of impact, but lacked solid digital levers to boost its ticket sales, attract more international visitors, and measure all of this precisely.

Our mission at Ads for Change : Boost marketing performance without betraying the event's committed DNA.

Results :
– ROAS of 403 % on Google Ads
– +312,000 impressions with a controlled CPC (~1 €)
– 40 % of international visitors in 2025
– Actionable insights to optimize the next edition.