Ovais Mehboob Ahmed Khan is a seasoned programmer and solution architect with more than 15 years of software development experience. He has worked in different organizations across Pakistan, the USA, and the Middle East. Currently, he is working with Microsoft as a Premier Field Engineer and based in Dubai. He specializes mainly in Application development, Cloud technologies and DevOps. He is a prolific writer and published numerous technical articles on different websites, such as MSDN, TechNet, DZone, and also an author of three other books published by Packt: JavaScript for .NET Developers, Enterprise Application Architecture with .NET Core and C# 7.0 and .NET Core 2.0 High Performance. John Callaway, a Microsoft MVP, has been a professional developer since 1999. He has focused primarily on web technologies and has experience with everything from PHP to C# to ReactJS to SignalR. Clean code and professionalism are particularly important to him, along with mentoring and teaching others what he has learned along the way. Clayton Hunt has been programming professionally since 2005, doing mostly web development with an emphasis on JavaScript and C#. He focuses on Software Craftsmanship and is a signatory of both the Agile Manifesto and the Software Craftsmanship manifesto. He believes that through short iterations and the careful gathering of requirements, we can deliver the highest quality and most value in the shortest time. He enjoys learning and encouraging others to continuously improve themselves. Rod Stephens has been a software developer, consultant, instructor, and author. He has written more than 30 books and 250 magazine articles covering such topics as three-dimensional graphics, algorithms, database design, software engineering, interview puzzles, C#, and Visual Basic. Rod's popular C# Helper and VB Helper websites receive millions of hits per year and contain thousands of tips, tricks, and example programs for C# and Visual Basic developers.