This paper aims to highlight distinct features of Big of information. We are living on the planet with huge varieties and tremendous volume of data Information is the new money. Data is being generated by sensors, digital images, activities in social media sites, forensic science, business informatics, research activities across various domains and many other internet based events as either source data or as cumulative to the existing data. This data increase from time to time exponentially from heterogeneous sources, techniques and technologies. The data is categories as “Big Data”. The core theme focuses on linking Big Data with people in various ways. Big Data is enormous in Variety, Velocity and Volume. It may be in any of the form like structured, unstructured. The idea of Big Data analysis is to manage giant volume of data, obtain beneficial information, suggest casualties and support decision making. This survey provides comprehensive review and audit of Big Data analytics. Leading and evolving applications of Big Data analytics are discussed. Some of the techniques for efficient analysis of Big Data are also illustrated.