This document presents a comprehensive validation and integration methodology designed to ensure the realization of the MultiX technologies using vertical oriented Proof of Concepts (PoCs). The document provides an overall description of the methodology to be used during the project execution, focusing on the roadmap and phases envisioned during the project, and the mechanisms established to monitor the progress of the integration and validation activities, and at the same time assess the completeness of the targeted tests. This document also describes the MultiX Open Labs environments, detailing the available and targeted technologies to be used during the validation activities, and the mechanisms to access the testbeds to deploy software components. Finally, this document provides an initial set of experiments and demonstrations envisioned during the project execution providing details regarding the MultiX sensing technologies to be validated and the targeted KPIs.