Krzysztof Walczak, Ph.D., and Jakub Flotyński, Ph. D., attended The 22nd International Conference on 3D Web Technology Web3D 2017 hosted by The University of Queensland, Brisbane (Australia), June 5 – 7, 2017. Jakub Flotyński served as a Program Co-Chair of the Web3D Conference. During the conference Krzysztof Walczak presented a paper entitled “Semantic Model for Distributed Augmented Reality Services” (authors: Walczak, K., and D. Rumiński). He chaired also a session „Transmission and streaming of 3D content”. Jakub Flotyński presented a paper “Knowledge-based Representation of 3D Content Behavior in a Service-Oriented Virtual Environment” (authors: Flotyński, J., and K. Walczak), he chaired a session „Web-based 3D environments and systems”. Krzysztof Walczak and Jakub Flotyński participated also in Virtual Reality Hackathon which took place in Brisbane June 2 – 4, 2017. Next year Web3D Conference will be hosted by Poznan University of Economics and Business. Krzysztof Walczak will serve as a General Chair of the conference.