What is big data and what makes data "big"? Yassi Hadjibashi, Chief Data Officer of Barclays Africa, and her colleague Kriti Sharma wax poetic on how corporates are using our data to make the customer experience faster, easier and more accurate in the realm of financial services. Listen to part one of this two-part series on big banks using big data, and be sure to tweet questions for part two using the hashtag #riseradio.