With the changing trends in the world of BI and the Big Data wave everywhere, a lot of organizations have started initiatives to explore how it fits in. To leverage the data ecosystem at it's fullest potential, it is necessary to think forward and ingest new technology pieces in the right place. That way, in a long run, both business and IT will reap its benefits.
Here's an interesting prediction by Gartner
" By 2020, information will be used to reinvent, digitalize or eliminate 80% of business processes and products from a decade earlier."
Imagine all the time, money and efforts you'll save off your existing data and infrastructure components if the Big Data implementation goes well. The architecture diagram below , is a conceptual design of how you can leverage the computation power of Hadoop ecosystem in your traditional BI / Data warehousing processes along with all the real time analytics and data science. They call it a data lake, warehouse is old school now.

Alright, having a Hadoop ecosystem saves the computational time and provides all bells and whistles of real time analytics but "how does it save money?