As the cliché goes, "data is the new gold" and many companies have realized this. The reason is, as the world generates more and more data and at the same time, competition between organizations is fiercer and faster, and as habits change faster, everyone wants an extra edge. Intuition, gut feeling or common sense rules are useful, but not enough. Data lets organizations understand clients, products and processes much better.
This is not just for web companies. For example, Rolls Royce has data scientists analyzing airplane engines data to determine when to schedule maintenance, L’Oreal, the cosmetics company, has data scientists studying the effect of several cosmetics on several types of skins, Fruition Sciences precisely determines when and how much to water grapes to produce better wines, FiveThirtyEight forecasts elections better than most, and Feedzai detects payment fraud. All this, and more, is just possible with data driven decisions.