We recently announced Bash on Ubuntu on Windows which enables native Linux ELF64 binaries to run on Windows via the Windows Subsystem for Linux (WSL). This subsystem was created by the Microsoft Windows Kernel team and has generated a lot of excitement. One of the most frequent question we get asked is how is this approach different from a traditional virtual machine. In this first of a series of blog posts, we will provide an overview of WSL that will answer that and other common questions. In future posts we will dive deep into the component areas introduced.