The objective of the speech will be to provide a comprehensive and essential overview of the use of WhatsApp as a business tool. In an increasingly interconnected world, where instant communication plays a crucial role, WhatsApp for Business emerges as an indispensable channel for companies of all sizes. We will focus on four key points that every professional must know in order to make the most of this platform, which in Italy today reaches 33 million users, discuss the strategic levers for different business contexts and illustrate some successful case studies.