The Experiment@ International Conference Series started at Calouste Gulbenkian Foundation, Lisbon, Portugal, in November 2011, followed by the second one hosted by University of Coimbra, Portugal, in September 2013, and the third one hosted by University of Azores, Portugal, in June 2015.’xx is a biennial event dedicated to promote Online Experimentation (OE), which comprises remote and virtual experimentation as identifiable and accessible objects and their virtual representations in the Internet of Everything structure. OE is aided by emerging technologies as those supporting remote experiments, 2D or 3D virtual experiments, augmented reality experiments and their interaction with sensorial devices, live videos and other tools which stimulate the user immersion in virtual environments recreating the real experience.’xx intends to contributing to extend the world capabilities in OE and to develop collaborative work in emerging technologies, bringing together engineers, researchers and professionals from different areas.