Debarchan Sarkar is a Support Escalation Engineer in the Microsoft HDInsight team and a technical author of books on SQL Server BI and Big Data. His total tenure at Microsoft is 7 years, and he was with the SQL Server BI team before diving deep into Big Data and the Hadoop world. He is an SME in SQL Server Integration Services (SSIS) and is passionate about the present-day Microsoft self-service BI tools and data analysis, especially social-media brand sentiment analysis. He hails from the "City of Joy" Kolkata, India, and is presently located in Bangalore, India, for his job in Microsoft Global Technical Support Center. He owns and maintains his Big Data Learnings group on Facebook and is a speaker at several of Microsoft's internal and external community events. His Twitter handle is @debarchans.

He is the author of Microsoft SQL Server 2012 with Hadoop, Packt Publishing and Pro Microsoft HDInsight: Hadoop on Windows, Apress Media LLC.

Jignesh Gangajaliya is a principal technical architect with over 11 years of core technology and global business leadership experience in defining solutions and technology architectures.

His expertise is in design, development, and deployment of large-scale software systems and solutions across various industry verticals. His core strengths are wide and deep hands-on technological expertise, strategic thinking, comprehensive analytical skills, creativity in solving complex problems, and the ability to quickly understand complex business problems and come up with pragmatic solutions.

He is passionate about creating a strategic vision, and building and transforming organizations to accelerate growth and value creation by leveraging new technologies, trends, and emerging opportunities.

He specializes in enterprise architecture, solution architecture, Microsoft server products and technologies, cloud computing, SaaS, Microsoft Azure, and Amazon Web Services.

Zhidong Wu received his M.S. degree in Computer Science from Brown University. He has worked at Microsoft Corporation and Baidu in the past. He is an enthusiast in Big Data and has experience in Apache Hadoop, Microsoft Azure HDInsight, and Microsoft Cosmos. He can be contacted at <[email protected]>. You can find out more about him at http://www.linkedin.com/in/wuzhidong1122.