This deliverable showcases the capabilities of the MARVEL framework for large-scale deployments, as well as extending it with third-party components. The deliverable first presents an overview of the main concepts and the use cases exploited within the MARVEL project. In addition, the deliverable reports on the scalability and extensibility requirements for a large deployment in a Smart City, which is the main target use case of MARVEL. Then, the approach considered for scalability and extensibility, organised based on the requirements previously described, demonstrates in detail the actions taken from the various components towards the completion of this goal. Subsequently, an in-depth analysis of the legal, ethical, and privacy related concerns, followed with operational and user-oriented considerations.