The document discusses Dgen constellations, which are collaborations between governments, businesses, non-profits and others to address issues at a global scale using open data infrastructure and standards. It provides examples of constellations that could tackle problems like modern slavery, supply chain transparency, air pollution, and money laundering. The constellations would involve developing shared data platforms, analytical tools, and governance and legal frameworks to allow for improved data sharing and coordinated solutions across many organizations. A sample roadmap is outlined covering development, adoption and iterative improvement of constellation components over multiple years.