Dave Wentzel is the chief technology officer of Capax Global, a premier Microsoft consulting partner. Dave is responsible for setting the strategy and defining service offerings and capabilities for the data platform and Azure practice at Capax. He also works directly with clients to help them with their big data journeys. He is a frequent blogger and speaker on big data and data science topics.

Sumit Pal is a published author with Apress. He has more than 22 years of experience in software from startups to enterprises and is an independent consultant working with big data, data visualization, and data science. He builds end-to-end data-driven analytic systems.

Sumit has worked for Microsoft (SQLServer), Oracle (OLAP Kernel), and Verizon. He advises clients on their data architectures and build solutions in Spark and Scala. He has spoken at multiple conferences in North America and Europe and has developed a big data analyst training for Experfy. He has MS and BS in computer science.