Marek Chmel is an IT consultant and trainer with more than 10 years of experience. He's a frequent speaker who specializes on Microsoft SQL Server, Azure, and security topics. Marek writes for Microsoft's TechnetCZSK blog, and since 2012 he's been an MVP: Data Platform. Marek is also recognized as a Microsoft Certified Trainer: Regional Lead for Czech Republic for few years in a row, he holds many MCSE certifications, and on the top of that he's a ECCouncil Certified Ethical Hacker and holder of several eLearnSecurity certifications. He earned his MSc (business and informatics) degree from Nottingham Trent University. He started his career as a trainer for Microsoft server courses. Later, he joined AT&T as a senior database administrator with a specialization in MSSQL Server, data platforms, and machine learning. Vladimir Muzny has been a freelance developer and consultant since 1997. His first steps with SQL Server were done on version 6.5 and from that times the working with all next versions of SQL Server has been never stopped. Now Vladimir teaches Microsoft database courses and also participates on SQL Server adoption in companies and also on projects for production tracking and migrations. SQL Server 2017 Administrator's Guide is his first attempt to share his knowledge and experience with people around the world, but writing is a strong drug and if possible, Vladimir is interested to share other namely his development experiences with others.