Big data refers to huge amount of structured and unstructured data collected from multiple sources and devices, Explosion of Internet of things is expected to connect 26 billion devices by 2020. There have always been two challenges : Organizing all information in a warehouse so that it can be fetched and processed efficiently . Second processing it in a way that it will provide meaningful results. It turns out only 58% company is understanding the value of their big data solutions. In contrast, small data address a specific problem in limited domains. It tends to focus on log analysis like user behavior on a website. A logging mechanism allows to capture specialized data for business teams and engineers without the need to dig into the ocean of big data. You can read more at : http://www.datasciencecentral.com/profiles/blogs/how-big-data-is-becoming-smaller-than-small-data