Data: our decisions are driven by it and our products are dependent on it. With more than 2 million customers, and an average of more than 2.3 million transactions per day, we have access to a lot of valuable information - but how do we actually use data at Monzo? Annabel St John Lyle and Katie Hindson bring you a deep dive into our data lake and talk data principles, data-driven decision making, and the future of data at Monzo.