The quick growth of the Virtual Sensor Networking (VSN) domain has led to a highly dispersed gamut oftechnologies and approaches, which seriously jeopardize the long-term vision of an Internet of Thingssince very few of these solutions are able to mutually communicate. VITRO aims at providing this crucialbut missing link between highly heterogeneous wireless sensors and actuators platforms and hencefacilitate cooperative smart objects. This proposal is focused on developing architectures, algorithms andengineering methods, which will enable the realization of scalable, flexible, adaptive, energy-efficient andtrust-aware VSN platforms. To achieve this objective, VITRO enabled platforms will:• Provide a homogeneous abstract appearance to enable federated collaboration with external entities(from objects and systems to domains and networks) and thereby extending the networking degree by several orders of magnitudes.• Simplify the discovery and management of the underlying hardware and software resources of largecollections of heterogeneous smart objects (sensors, actuators and embedded processors).• Achieve energy-efficiency, trust-awareness and seamless connectivity and communication in large-scaleheterogeneous VSN deployments and thereby enable dependable, secure and scalable inter-objectscollaboration.The VITRO results will be packed in a VITRO toolbox, which will enable easy configuration and instantsupport for deploying VSN applications. Although VITRO aims to be application-neutral, the proposedarchitecture and protocol toolbox will be validated through extensive simulation testing and furthermoreimplemented in a large trial of sensor nodes and smart objects in smart home and building automationapplication domains. Moreover, the developed technologies will be proposed as new standards for embedded networking solutions, mainly to ETSI M2M, 6LowPAN and IETF ROLL.