Evolving Legacy Enterprise Systems with Microservices-Based Architecture in Cloud Environments

Abstract

The contributions of this thesis are to propose and validate an approach to the migration of a legacy system to a microservice-oriented architecture and Cloud based system. This approach is predicated on the creation and use of two sets of rules: a set of feature-driven microservice transformation rules and a set of feature-driven cloud migration rules. It is hypothesized that the correct interpretation of, and the appropriate adherence to, these rules will lead to the implementation of a new microservices-oriented and Cloud based system, which will replace the functionality of the legacy system, improve the QoS offered by this, in terms of non-functional requirements, and be far easier to modify in the future in order to cope with further functional and other requirements which may emerge.