This document discusses how travel companies can use personalized marketing strategies enabled by big data analytics. It argues that harnessing consumer data to provide tailored experiences at each stage of the travel planning and booking process can increase sales and customer retention. Specifically, it explores how travel sites can leverage customer preferences and behaviors to improve on-site recommendations, target digital ads more effectively, and tailor messaging in marketing communications. The key is for companies to develop a deep understanding of individual customers in order to engage with them in the most relevant way.