Performance marketers are increasingly challenged by rising expectations to optimize customer acquisition cost (CAC) and return on ad spend (ROAS) while adapting to the deprecation of third-party cookies. To address this, companies like ClickUp are leveraging first-party data stored in cloud data warehouses, such as Snowflake, to enhance marketing strategies. By integrating and analyzing customer data, ClickUp has implemented advanced methods to improve ad targeting and email personalization, driving significant reductions in CAC and improved ROAS. Marc Stone, VP of Growth and Data at ClickUp, highlights the use of a warehouse-first data strategy and tools like Census to predict customer lifetime value and optimize campaigns. This approach enables ClickUp to provide platforms with quality data, resulting in a 50% reduction in customer acquisition costs. Additionally, by modeling customer data and managing audiences centrally, ClickUp enhances personalized communication across multiple channels, ensuring consistency and accuracy in targeting. The cloud data warehouse is emphasized as a critical component in building a tech stack that maximizes marketing effectiveness and returns deeper insights into customer behavior, positioning data teams as integral to business growth.