Big Data refers to datasets that are very large and complex to the point that traditional management and analysis tools are not fully capable of analysing the data and drawing out pertinent conclusions/results.
According to research firm Bersin by Deloitte, Big Data is concerned with “huge datasets, ranging to exabytes of data, where the data is ever-increasing in volume; the speed of the data in and out of the data set is increasing in both velocity and volatility; and, the data are increasing in variety.”