In these days, we know that creating asynchronous APIs are great in instances where user activity is heavy. These API requests excel at executing background tasks without getting in each other’s way. This is essential in a microservices environment where features are smaller, more integrated, and APIs are more plentiful. In this session we will be covering in practice the creation of an asynchronous service in a simple way, using Kotlin language combined with Coroutines and Spring Boot Framework.