Frequent updates of business needs are one of the factors of the evolution of a company. These permanent changes require a large flexibility of the Information System (IS). SOA (Service Oriented Architecture) is an architecture that offers more scalability to an application by subdividing the monolithic block into independent services. Nevertheless, it is not sufficiently suitable in terms of accessibility of services and data. It is thus necessary to orient the design of the IS towards a new architecture called Microservice Architecture (MSA). The objective of this paper is to recommend a methodology to design MSA. Indeed, our approach is based on Praxeme which is an enterprise methodology appropriate to SOA. The result obtained from the approach proposed in this paper is a model allowing to automate the MSA design.