This is the fourth of a series of five studies exploring the sustainability of open source software communities in the public sector. INTRODUCTION Developers Italia is the name of both a community of Italian software developers and the central open source software platform designed for the delivery of public services in Italy. Developers Italia is a vibrant community made up of citizens, civil servants, public administrations, and enterprises. Community members have the opportunity to meet on the platform and discuss ongoing or future projects, share ideas, and upload source code. Developers…