Case Study: COSAC doubles Microsoft Ads revenue with Door4

Cosac doubles Microsoft Ads revenue in 3 months with Door4

Cosac, a leading provider of online training courses, faced a challenge in scaling its digital advertising growth due to market saturation and rising costs on Google Ads. To find new customers without sacrificing efficiency, they partnered with the performance marketing agency Door4 to explore Microsoft Ads as an incremental channel.

Door4 designed and executed a bespoke Microsoft Ads strategy, not simply replicating existing Google campaigns. Through a phased testing approach and hands-on optimization, Door4 successfully doubled Microsoft Ads revenue within three months. The results were a 20% uplift in total paid revenue and a stronger return on ad spend, enabling Cosac to build a more sustainable, multi-channel growth strategy.

Cosac