Don Syme is a principal researcher at Microsoft Research, and the main designer of F#. Since joining Microsoft Research in 1998, he has been a seminal contributor to a wide variety of leading-edge projects, including generics in C# and the .NET Common Language Runtime, F# itself, F# asynchronous programming, and units of measure in F#. He received a Ph.D. from the University of Cambridge Computer Laboratory in 1999. Adam Granicz is the chief executive officer of IntelliFactory, the leading provider of F# training, development and consulting services, and technologies that enable rapid functional, reactive web development. He has over eight years of experience applying F# in commercial projects, and works on WebSharper, IntelliFactory’s web development platform that offers unrivaled productivity, a uniform programming model based on F#, and the fastest way to develop robust, client-based rich Internet and mobile applications. Adam is an active F# evangelist, a regular F# author and speaker at development conferences and workshops, and serves on the steering committee of the Commercial Users of Functional Programming (CUFP) Workshop, representing the F# segment. Antonio Cisternino is an assistant professor in the Computer Science Department of the University of Pisa. His primary research is on scientific computing, meta-programming and domain-specific languages on virtual-machine-based execution environments. He has been active in the .NET community since 2001 and developed VSLab, a Microsoft Visual Studio add-in to support MATLAB-like programming in F# and Visual Studio. He is also author of annotated C#, an extension of C#, and Robotics4.NET, a framework for programming robots with Microsoft .NET. Cisternino holds a Ph.D. in Computer Science from the University of Pisa.