The document discusses how integrating different types of marketing data can provide a more holistic view of the impact of marketing initiatives. It describes how a company analyzed data from brand surveys, scanner data of retail sales, and consumer panel data all together. This allowed them to see that while brand surveys showed steady brand performance, retail sales and consumer behavior data revealed that frequent price promotions were training customers to only buy the brand when it was on sale and were devaluing the brand over time. Integrating these multiple data sources provided useful insights about how marketing activities were truly affecting customer attitudes and purchase behavior.