Description: Multi-API is an architecture that allows accessing and managing multiple APIs together, facilitating interaction with complex systems that require the integration of various services. This methodology is based on the principle that, in a digital environment where applications and services are increasingly interdependent, it is essential to have an approach that simplifies communication between different APIs. Multi-API enables developers to create an abstraction layer that unifies calls to multiple APIs, which not only optimizes performance but also enhances the user experience by reducing latency and the complexity of interactions. Its main features include the ability to manage authentication and authorization centrally, the possibility of performing real-time data transformations, and the implementation of design patterns such as the API Gateway. This architecture has become especially relevant in the development of modern applications, where agility and scalability are fundamental to meet market demands.