Computing) is a mode of increasing, using and delivering related services based on the Internet, which usually involves providing dynamically expandable and often virtualized resources through the Internet. Cloud is a metaphor of network and internet. In the past, cloud was often used to represent telecommunication networks, and later it was also used to represent the abstraction of the Internet and the underlying infrastructure. So cloud computing can even let you experience the computing power of 10 trillion times per second. Such a powerful computing power can simulate a nuclear explosion and predict climate change and market development trends. Users access the data center through computers, notebooks, mobile phones, etc. , and calculate according to your own needs.

Cloud computing has many definitions. What is cloud computing? There are at least 100 explanations. [3]

What is widely accepted at this stage is the definition of National Institute of Standards and Technology (NIST): Cloud computing is a pay-per-use model that provides available, convenient and on-demand network access.

Enter the configurable pool of computing resources (including network, server, storage, application software and services), and provide these resources quickly with little management work or little interaction with service providers.

Big data refers to a collection of data that traditional software tools can't capture, manage and process in an affordable time range.

In The Age of Big Data, co-authored by Victor Meyer-Schoenberg and Kenneth Cookeye, big data means that all data are used for analysis and processing, and there is no shortcut to random analysis (sampling survey). 4V characteristics of big data: volume (mass), speed (high speed), diversity (diversity) and value (value).

Cloud services

It is a mode of increasing, using and delivering related services based on the Internet, which usually involves providing dynamically extensible and often virtualized resources through the Internet. Cloud is a metaphor of network and internet. In the past, cloud was often used to represent telecommunication networks, and later it was also used to represent the abstraction of the Internet and the underlying infrastructure. Cloud service refers to obtaining the required services in an on-demand and extensible way through the network. The service can be related to IT and software, Internet or other services. It means that computing power can also be circulated as a commodity through the Internet.