This workshop is for developers, analysts, chain operators, and general audiences interested in using data to evaluate and/or inform strategies for L2 ecosystems. Topics: - Picking your metrics, and why to avoid focusing on a single metric. - How to pull data from & contribute to open data sources to build your own dashboards. - Additional research: LTV, personas, chain economics. Attendees will leave empowered to build their own health dashboards, by using and contributing to open data.