Velocity refers to the speed at which data are generated and processed. The velocity of data increases over time. Initially, companies analyzed data using batch processing systems because of the slow and expensive nature of data processing.As the speed of data generation and processing increased, real time processing became a norm for computing applications. Gartner (2015) forecasted that 6.4 billion connected devices would be in use worldwide in 2016 and that the number will reach 20.8 billion by 2020. In 2016, 5.5 million new devices were estimated to be connected every day to collect, analyze, and share data. The enhanced data streaming capability of connected devices will continue to accelerate the velocity.