In today’s IT world, microservices architecture becomes attractive. Comparing with the traditional monolithic application, microservices provides various benefits, such as ideal fit for agile methodology, native to cloud-based development, greater separation of concern, higher scalability and flexibility, and faster turnaround. However, the business organizations will face the following challenges when migrating the monolithic enterprise application into microservices: Increased complexities in the integration of the distributed services Difficulties in managing distributed transactions that span more than one services Information barriers that lack an end-to-end governance of the business flow across the services In this article, with the study of a sample “submit shopping cart” business process, we will discuss the two classic microservice integration patterns: service choreography and orchestration. By evaluating the pros and cons of each approach, we will go a step further to loo