Re:Earth Flow is an open-source geospatial ETL tool designed to make complex data workflows easier to build, understand, and collaborate on. While the core is open source, it is also offered as a managed service with a freemium model, supporting both experimentation and real-world use.

This workshop provides a practical, hands-on introduction to building geospatial pipelines. Participants will work directly with datasets to construct workflows using vector, tabular, and 3D data such as CityGML. Through guided exercises, attendees will learn how to filter, transform, and combine data, while gaining familiarity with Flow’s visual interface and execution model.

A key focus is understanding how workflows behave during execution and how to debug them effectively. Participants will experience real-time collaborative workflow editing, including shared debugging sessions with synchronized execution state and intermediate data inspection. Improvements since the alpha release—such as a redesigned expression system and stronger versioning tied to debug runs—enable more reliable and transparent workflow development.

The session concludes with open exploration, encouraging participants to experiment, modify workflows, and apply what they’ve learned to realistic scenarios.