Day1Data is a marketing analytics and measurement partner helping businesses understand what drives growth and make more informed investment decisions. Its services help brands assess the impact of online and offline marketing, distinguish incremental results from activity that may have happened anyway, and account for factors such as seasonality, pricing and promotions. Day1Data also advises on balancing brand-building and performance marketing, including where, when and how to allocate budgets.

The company offers expertise in marketing mix modelling (MMM), lifetime value (LTV), multi-touch attribution (MTA), experimentation and analytics. Its work can include measuring branded content, improving customer acquisition efficiency, and connecting data sources to create more scalable reporting foundations. For example, Day1Data describes building automated data systems, aligning teams around consistent performance indicators and creating validated semantic layers for decision-making and AI use cases.

The company emphasizes tailored, auditable analysis rather than black-box recommendations, aiming to make insights understandable and useful in practice. Its client examples span sectors including SaaS, consumer goods, fintech, financial services, technology and beauty.