YAWL in the Cloud

In the context of the CoSeLoG project (which involves 10 Dutch municipalities), we realised a proof-of-concept implementation based on YAWL. The municipalities want to share a common IT infras- tructure and learn from one another, but also allow for local differences. Therefore, we extended YAWL to run in a cloud-based environment lever-aging on existing configuration possibilities. To support "YAWL in the Cloud" we developed load-balancing capabilities that allow for the distribution of work over multiple YAWL engines. Moreover, we extended YAWL with multi-tenancy capabilities: one municipality may effectively use multiple engines without knowing it and one engine may safely run the processes of multiple municipalities.