The document discusses the concept of data driven planning, which aims to optimize planning processes using data. While data has always been used to some degree, modern technology has enabled unprecedented access to data from various sources and automated buying and selling of media inventory. This represents an evolution from the early 20th century, when scientific advertising using basic data like coupons was advocated. To effectively implement data driven planning now requires investments in technology, data collection and storage, analytical skills, and data science professionals.