“Hello world!” is typically the first output that many people learn to code when they start programming. The phrase also seems perfectly suitable for this first blog post. That is, because this blog deals with the theme of virtual design and construction, which I see as the use of virtual methods for managing building products, organizations and processes within the Architecture, Engineering and Construction (AEC) industry. I am a researcher at Twente University and will post updates on this blog about ongoing research projects. Welcome, and… Hello world!