Dan Keeley is an open source analytics advocate who has been working with Pentaho for nearly 10 years. He is now running his own company, building a team specializing in fast turnaround analytics. He has reviewed books on Pentaho Reporting and Pentaho Data Integration.

Sadakar Pochampalli has been working as a BI consultant, and has around 4 years of experience with the Pentaho BI suite (all the modules) and the Japsersoft BI suite (all the modules). He is a postgraduate with a masters in computer applications from Bankatlal Badruka College for IT, Hyderabad, Telangana. He was awarded by Badruka (BBCIT) college with E.Balagurusamy gold medal for his outstanding performance during his postgraduation. He has been involved in end-to-end BI solutions using the Pentaho BI suite to meet the customers' expectations. He is passionate about learning open source and enterprise BI technologies as well an enthusiast of working on big data technologies. He often says to his friends, colleagues, and family that learning things never exhausts the mind. He has successfully delivered around 20 end-to-end BI projects using Pentaho and Jaspersoft. He has also trained more than 200 folks, from freshers to the CEOs of companies.

This is the first book he has reviewed. He is the author of two active blogs: http://pentaho-bi-suite.blogspot.in/ (Pentaho BI Suite) and http://jasper-bi-suite.blogspot.in/ (Jaspersoft BI Suite).

Umang Shah did his MSc (IT) at the Dhirubhai Ambani Institute of Information and Communication Technology (DA-IICT), which is among India's top tier institutes. After completing his masters of science, he worked in a startup firm, Cogbooks, as a BI-ETL developer and has working here for the last 3 years. As a startup culture, he worked on multiple roles and with multiple technologies. Pentaho, Amazon-EC2, and Cassandra are major parts of them. He writes a blog for helping Pentaho community: https://shahumang.wordpress.com.