Customer satisfaction makes or breaks a retailer, and the annual peak shopping day is the ultimate test. For Dixons Carphone, that test came on Black Friday, the start of the holiday shopping season. As a result of lessons learned, Dixons Carphone initiated a customer-obsessed redesign of people, process, and technology. Black Friday 2015 showcased the benefits of the company's cultural and business technology (BT) transformation. This report helps infrastructure and operations (I&O) professionals understand the steps Dixons Carphone took and why.