What does cloud computing mean? Why is it called cloud computing?

Generally speaking, cloud computing processes data at the far end of the network because of the data processing performance (CPU, memory, hard disk and GPU, etc. Personal devices such as mobile phones, tablets and personal computers are very limited, so it is very unrealistic for users to buy hundreds of thousands or even millions of high-performance servers; In addition, individuals use ordinary broadband, and a large number of external access to internal servers (game servers and website servers, etc.) is extremely unstable. ), and installing a dedicated line with fixed IP will be extremely expensive; Secondly, individuals and private enterprises sometimes need professional software services on some platforms. Cloud computing is put forward to solve the above pain points. It centrally manages and distributes network facilities (IAAS, PAAS) and software services (SAAS), such as servers in idle state of large companies, and rents processing performance (CPU, memory, hard disk and GPU, etc. ) and software services to users.

Cloud computing can make it easy for people to move their offices. When they only travel with notebooks and need to deal with big data such as video production and picture rendering, they only need to remotely access the cloud computing host and let it handle it. At present, Huawei's mate 10 and Samsung's Note E8E8 both support peripherals (keyboard and mouse, etc.). ) in order to realize mobile office, notebooks are not needed.

Cloud 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. At this stage, it is generally accepted that the National Institute of Standards and Technology (NIST) defines cloud computing as a pay-per-use model. This model provides available, convenient and on-demand network access, and enters a configurable pool of computing resources (resources include networks, servers, storage, application software and services), which can be quickly provided through little management work or service providers.