Elaboration of a Domain Model for Migrating the Monolithic Software Architecture of a Data Management Server into a Microservice Architecture

This paper presents the necessary steps for creating a useful domain model for the Coalition Shared Data(CSD) domain. After describing the basic procedure of creating a domain model following the principles ofdomain-driven design (DDD) some concrete results achieved and experiences gained throughout this processare depicted. The domain model is the backbone for further development activities to migrate the monolithicsoftware architecture of an existing data management server into a loosely coupled one according to the principles of microservice architectures. Major challenges with the creation of such a domain model and the benefitsof loosely coupled software components in the CSD environment are outlined.