Copei, SebastianEmme, ClemensFreiherr von Künßberg, MaximilianMalik, AdamNolte, NataschaNorbisrath, UlrichZündorf, AlbertRiebisch, MatthiasTropmann-Frick, Marina2022-08-312022-08-312022978-3-88579-718-0https://dl.gi.de/handle/20.500.12116/39307Workflow based systems are frequently modeled using BPMN diagrams for requirements engineering and UML diagrams for analysis and design. While such diagrams are great input for the software development, non-ICT people like domain experts, customers, end users or business people usually do not understand their content. Therefore, non-ICT people are frequently not able to contribute to these diagrams nor able to identify missing or incorrect parts. This paper proposes the very informal event storming approach as a means to involve users into the requirements engineering activities. We then refine the event storming results via Event Modeling by adding elaborated user interface scenarios. These event models then serve as input for integrated data modeling steps.enRequirements EngineeringDesignEvent StormingWireframesData ModelingText/Conference Paper10.18420/modellierung2022-0071617-5468