"Purple Cow" is a marketing concept introduced by Seth Godin in his book of the same name. It emphasizes the importance of being remarkable in a crowded marketplace. The idea is that traditional marketing strategies are no longer effective; instead, businesses should strive to create products or services that stand out and capture attention, much like a purple cow would in a field of ordinary cows. The concept encourages companies to innovate and take risks to differentiate themselves. By being unique and memorable, businesses can attract customers and generate word-of-mouth marketing, ultimately leading to greater success and visibility in their industry.