[1] McKinsey, a world-renowned consulting firm, first proposed the arrival of the era of "big data". McKinsey said: "Data has penetrated into every industry and business functional field today and become an important factor of production. The mining and application of massive data indicates a new wave of productivity growth and the arrival of consumer surplus. " "Big data" has existed in the fields of physics, biology, environmental ecology, military, finance, communications and other industries for some time, but it has attracted people's attention because of the development of the Internet and information industry in recent years. [2] Big data is another subversive technological revolution in the IT industry after cloud computing and the Internet of Things. Cloud computing mainly provides places and channels for data assets to be saved and accessed, and data is the truly valuable asset. Business transaction information within an enterprise, commodity logistics information in the Internet world, interactive information between people in the Internet world and location information will far exceed the carrying capacity of the existing enterprise IT architecture and infrastructure, and the real-time requirements will also greatly exceed the existing computing capacity. How to revitalize these data assets and make them serve national governance, corporate decision-making and even personal life is the core issue of big data, and it is also the inner soul and inevitable upgrading direction of cloud computing.

For example, you have browsed the razor information on the web page. Next time you open the webpage, there will be an advertisement window to recommend a razor to you, because your data has been recorded by the server, and many people's information has been recorded. I hope I can adopt it myself.