The term Digital Twin emerged in 2017 as one of the main technological trends according to Gartner consultancy and its results have been demonstrated in multiple areas. This article aims to introduce the concept of Digital Twin technology, reviewing some of its main benefits and presenting a practical example. In order to develop a solution to optimize its warehouse, we co-innovate in collaboration with Frit Ravich, the leading manufacturer and distributor of external brands from well-established companies such as Mars Spain, Nestlé and Ferrero (3,000 references) that serve around 50,000 points of sale every week.