This document summarizes a presentation about building a research data infrastructure for educational studies in Germany. It discusses the experiences of the FDB project, which aims to create a coordinated infrastructure through a network of organizations. Currently, the research data infrastructure has some limitations, including a lack of coordination, insufficient capacities, and underrepresentation of certain data types. Moving forward, the infrastructure needs to further coordinate its services, expand its capacities, and ensure long-term sustainability to fully support open educational data. The FDB project aims to address these challenges through its collaborative efforts.