What is cloud computing? An easy-to-understand explanation!

The basic principle of cloud computing is that by distributing computing on a large number of distributed computers instead of local computers or remote servers, the operation of enterprise data centers will be more similar to the Internet. This enables enterprises to switch resources to required applications and access computers and storage systems as needed. This is a revolutionary measure, for example, it is like changing from the old single generator mode to the centralized power supply mode of power plants. It means that computing power can also be circulated as a commodity like gas and water and electricity, which is convenient to obtain and low in cost. The biggest difference is spread through the Internet. The blueprint of cloud computing has come to the fore: in the future, everything we need, even such tasks as supercomputing, can be realized through network services, only a notebook or a mobile phone is needed. From this perspective, the end user is the real master of cloud computing.

According to foreign blog websites, sources said that Microsoft has begun to disclose to large enterprise customers that it plans to incorporate its software business into "cloud computing", and it is expected that the relevant strategy will be announced next week or a week later.

Cloud computing is the development of distributed computing, parallel computing and grid computing, or the commercial realization of these computer science concepts. Many multinational information technology companies, such as IBM, Yahoo and Google, are using the concept of cloud computing to sell their products and services. The word cloud computing may be borrowed from the "electronic cloud" in quantum physics, emphasizing the universality, ubiquitous distribution and sociality of computing. There is an "electron cloud" in quantum physics. Electrons moving around the nucleus are not the orbits of an empirical world, such as celestial bodies, but the existence of clouds. The description of electron motion is not Newton's classical mechanics, but a density function of probability distribution. Schrodinger wave equation is used to describe the probability that particles are located in a certain position in a specific time, which is completely different from the formulation of classical mechanics. Electronic cloud has the characteristics of probability, universality and simultaneity. Cloud computing may indeed come from the concept of electronic cloud. There is a so-called "ubiquitous computing". Last year, IBM had a ubiquitous computing called "ubiquitous", and MS(Bill) quickly proposed a ubiquitous computing "pervasive". Now people have a new understanding of pervasive computing. However, cloud computing is not a pure commercial speculation, it will indeed change the pattern of the information industry. Nowadays, many people have used Google Doc and Google Apps, and used many remote software applications such as Office word processing, instead of installing these applications on local machines. Who will pay for office software in the future? There are also many enterprise applications, such as e-commerce applications. For example, to write a trading program, there are ready-made templates in Google's enterprise solutions, and a salesperson can make them without learning Netbeanr at all. This computing and industrial trend is in line with the spirit of open source and the trend of SaaS (software as a service). There is a saying that there are only five computers in the world today, one from Google, one from IBM, one from Yahoo, one from Amazon and one from Microsoft, because these five companies are the first to apply distributed processing in business. Sun Company has long been prescient in proposing that "the network is the computer".