The main purpose of this thesis is to present the core aspects of Salesforce B2B Commerce technology, how it is designed, how it works and how to exploit all its functionalities. Moreover the thesis will deeply dive into the presentation of an e-commerce website implementation for a real company. This project has been one of the very first use of the newest Salesforce B2B Commerce on Lightning Experience in Italy and in Europe too. The technology is forecast to grow exponentially in the next few years since it is already striking the market and it has already imposed upon the American market.