In this book we analyze Government Digital Platforms (GDP) phenomena. Our research analysis demonstrates the process of digital public services transformation into public services ecosystem in which we observe the implementation of the partnership between public authorities and external actors in shared infrastructure, processes, data and information systems. GDP are defined through several approaches: their functionality, comparison with commercial digital platforms. We provide the methodology of GDP design and development based on GDP meta classification and typology. The scenarios of partnership between government and industry actors in deploying or creating the platform as an effective mechanism of industrial governance and development are substantiated. The book will be useful for practitioners in public administration as well as for students and Ph.D. students in the universities who specialize in public administration programs.