What is Data science? Best Data Science Training Institute in Electronic City - eMexo Technologies Data science is a combination of statistics, data analysis, machine learning and many other methods to understand and analyse the data to get valuable insights. It uses techniques and ideas from various fields such as mathematics, information science, and computer science (Databases, machine learning etc). It is often used in business analytics to gather business intelligence and make informed business decisions. The Harvard Business Review called it “The Sexiest Job of the 20th Century” in their report in 2012 (report here) and it made a buzz.