The Microsoft Build Engine is a platform for building applications

Visual Studio MSBuild (MSBuild.exe)

Snippet from Wikipedia: Build (developer conference)

Microsoft Build (often stylised as //build/) is an annual conference event held by Microsoft, aimed at software engineers and web developers using Windows, Microsoft Azure and other Microsoft technologies. First held in 2011, it serves as a successor for Microsoft's previous developer events, the Professional Developers Conference (an infrequent event which covered development of software for the Windows operating system) and MIX (which covered web development centering on Microsoft technology such as Silverlight and The attendee price was (US)$2,195 in 2016, up from $2,095 in 2015. It sold out quickly, within one minute of the registration site opening in 2016.