This book imagines how Europe might re-organise and re-group after the COVID-19 crisis by assessing its effectiveness when responding to it. For this purpose, it directs its focus on: i) sovereignty challenges; ii) technological challenges and iii) governance challenges. These three challenges do not present hermetic legal problems, they intersect and connect on many levels. The book shows this by examining the relationship between public and private power, and illustrating how the rise of technocratic authority is deeply connected to the choice of technological solutions. It illustrates how constitutional decisions taken during states of emergency give rise to private governance challenges related to cybersecurity and data protection. Experts from the fields of EU governance, data protection, and technology explore these questions to provide answers to how the EU might develop in the future.