State of the art, project concept and requirements

This report includes the additional information that are needed to design the ASTRID architecture and that have been collected at the beginning of the project, namely the work produced by tasks T1.1-T1.4 (state of the art, project concepts and application scenarios, requirements). Requirements of the different stakeholders, which is one of the inputs to the design of the architecture, and the assessment procedures and metrics will be obtained through standard techniques (e.g. interviews with key stakeholders, focus groups, public consultations).