Retail is in the age of big data and more and more information is being generated about the customer journey. It is critical to store this buyer journey data to better understand customers in order to maintain the relationship with them. However, capturing data is just the first step, and analyzing this information is essential to segment customers and offer what they want. Using a real customer base (around 600,000 customers) of a large supermarket chain, this study aimed to understand their behavior in terms of channels from cohorts of different generations to determine unique purchases, total purchase spend , total unique items purchased (destined products), and total items purchased. In addition, it also evaluates the purchase behavior for own brand items and items from the supermarket s exclusive supplier, with the aim of understanding these differences and enabling more assertive actions in terms of CRM and marketing for the company. In analyzing the data, it was found that WhatsApp was the most consistent channel. Baby Boomers were more likely to use this channel, while Millennials and Generation Z were less likely. The digital channel showed a difference only in terms of spending, and the physical channel was preferred by Generation X and Baby Boomers. Xennials showed behavior similar to Generation X and Generation Y.