Extreme personalization works… but it’s hard work. We know that the more narrowly our marketing is focused, the more likely people are to respond. The most extreme version of this is 1-to-1 marketing, which while effective, is not really scalable. Through creativity and technology, however, several companies have been able to utilize extreme personalization at scale, and in doing so, redefine their industries. Today, we’ll be looking at these companies and analyzing 5 extreme personalization examples that actually worked.