In this episode of "Startup for Startup," the hosts delve into how Monday.com transformed its marketing campaign evaluations, reducing the assessment period from 28 days to just 2. They chat with a business data analyst who shares insights on creating a proxy metric—a reliable indicator closely linked to converting paid customers—using user registration data and initial product activation. This innovative approach enabled the team to swiftly pinpoint effective campaigns and optimize resource allocation, which boosted their confidence in marketing investments and sped up campaign iterations. However, the analyst emphasizes that while this proxy metric works well for Monday.com's audience, it may not suit everyone and should be reviewed regularly.