Big Data refers to extremely large data sets that can be analyzed computationally to uncover patterns, trends, and associations, especially relating to human behavior and interactions. The defining characteristics of Big Data are often described by the three Vs: Volume, Velocity, and Variety. Volume refers to the sheer amount of data, Velocity indicates the speed at which data is generated and processed, and Variety denotes the different types of data, both structured and unstructured. Big Data analytics enables organizations to make more informed decisions, improve operational efficiencies, and develop new products and services.