Towards a Roadmap for the Migration of Legacy Software Systems to a Microservice based Architecture Topics: Cloud Migration; Development Methods for Cloud Applications; Microservices: Atomation Deployment and Management, Resource Allocation Elasticity, Service State and Resilience In Proceedings of the 9th International Conference on Cloud Computing and Services Science CLOSER - Volume 1, 37-47, 2019 , Heraklion, Crete, Greece