This thesis, carried out in collaboration with Storm Reply, focuses on the design and implementation of a microservice on AWS cloud, aimed at facilitating system integration within assurance projects in the telecommunications sector. The proposed microservice adopts a cloud-native approach, following best practices to ensure reliability, scalability, and security. By leveraging cutting-edge technologies such as Docker, Node.js, AWS Elastic Container Service, Redis, AWS AppConfig, and AWS EventBridge, the microservice orchestrates an event-driven choreography to manage interactions between heterogeneous systems. A key feature of the microservice is its configurability through JSON files, allowing for detailed descriptions of the systems to be integrated and the necessary transformations for incoming and outgoing data.