Cross-Vendor Variability Management for Cloud Systems Using the TOSCA DSL
Tobias Fellner, Paul Grünbacher · 2025
Cloud-based software systems offer numerous configuration options which significantly increase the complexity of variability management.The TOSCA DSL has been defined to reduce the reliance on specific vendors and to enhance the interoperability across different cloud services.This approach, however, does not support systematic variability management.Our paper thus introduces an approach addressing the challenges of supporting different types of configurations across different binding times in cloud-based systems.Specifically, by employing TOSCA's vendor-neutral definition language, our approach standardizes and simplifies the management of cloud configurations.We evaluate the correctness and performance of our approach for different configuration dimensions based on a cloud-based voting application.Our approach can improve the flexibility and efficiency of managing cloud environments, which is essential for robust and effective cloud operations.