This ConOps (Concept of Operations) aims to be a reference manual for U-space, intended mainly for a knowledgeable audience seeking to better understand the U-space concept for Research and Innovation (R&I), or policy-making purposes. To achieve these goals, the ConOps begins with an overview of the U-space concept and then dives into perspectives on the evolution of the U-space framework, from its initial implementation to its ultimate 
target: seamless integration with ATM.