Most of the companies are migrating towards the cloud technology, they have to concentrate in two important factors namely Data management and Security. Companies like Google, Yahoo and Bing - make use of users data they can personalize the search engines. Example - I can display the ads in my webpage based on the mind set of the people in that particular area. Facebook needs to process petabyte of data to understand the mind sets of the customers.
It requires different paradigm to handle such queries and data. By understanding customers, we can capture their attention by displaying the ads, suggest some friends, etc. Such process are called web intelligence i.e, giving intelligence to the web servers.
So companies like these and start-ups in cloud can make more money from big data and web intelligence techniques. For any organizations or companies big data play a vital role
Here is an example - see more at http://flytxt.com/big-data-platform/