The objective of this work is to develop an online store for the fashion brand Pien, specialized in selling clothing and fashion accessories. The application has been designed to optimize and expedite user access to Pien's product range. Simplified and rapid access is facilitated by allowing products to be filtered by categories and prices. Additionally, users have the capability to review their past orders. For the development of the user interface was used React.js technology, while the server-side of the application was developed using the Java/Spring Boot framework. The administrative interface enables comprehensive management of the online store, including editing and adding products, and is further secured with authorization mechanisms. Advanced analytics features, such as tracking best-selling products and identifying the highest-spending customers, have also been implemented within the online store. For the storage and management of all dana was used a MySQL database.