Code generation for cloud-based implementation of public sector processes using a pattern-based approach

For public sector digitisation, the working processes of public administration are recorded, documented and optimised. This paper is concerned with the question of how the resulting business process models can be used for the development of cloud-based systems in a model-driven software development approach. In doing so, it focuses on the formulation of a methodical and technological approach called Towerpark. Towerpark comprises two elements: a process modelling notation and a set of technical tools for the building of specific applications using code generation in the context of public administration. The Towerpark modelling notation (TMN) uses elements from the Business Process Model and Notation (BPMN) 2.0, whereas the Towerpark processing components rely on Kubernetes: from BPMN diagrams, Kubernetes manifests are generated, which can be deployed as specific applications inside a cloud infrastructure. We illustrate and evaluate our approach with a case study and give an outlook on further research activities.