Many people think that the cloud is the Internet, but David Linscombe, cloud expert and chief cloud strategist at Deloitte Consulting, said it was “actually just a connection mechanism.” In the information technology world, cloud is just the abbreviation of “other people’s computer.” “You can manage and store your content (music, photo data) anywhere, using the Internet to access servers in large data centers – simply, other people’s computers.
Gone are the days of buying expensive software and worrying about the lack of equipment space. Rely on Uber to take a taxi? Like to browse photos of family and friends? Without a cloud, such an application would not exist. “You don’t have it on your phone, but you can see them in some data centers,” Linthicum said. “That’s the beauty of the cloud, because you don’t even know it is there.”
What is the most important thing? You don’t need to understand it to use it. You can leave this question to service providers like Amazon, Google, IBM, and Intel, which have invested heavily in cloud computing for individuals and companies.
Cloud computing three-tier model
From a technical and system perspective, the connotation of cloud computing should include the following eight parts. The three levels corresponding to IaaS, PaaS and SaaS constitute the basic technical architecture of the cloud computing system, which can be called the “three-layer model of cloud computing”, while cloud security, cloud quality, cloud standard, cloud operation and cloud Operations provide a global guarantee for the entire cloud computing system (also known as cloud service systems). These eight organic combinations ensure that cloud service systems can provide cloud users with efficient and high quality cloud services.
Software as a Service (SaaS)
Software as a service, mainly refers to a variety of applications that can be directly used by cloud users. You interact most with this thing. It allows users to pay for cloud service providers to fully process the back end portion of their applications. Any public website that can serve as an application at the same time belongs to SaaS, such as Google Docs, Gmail, and Microsoft 365.
Infrastructure as a Service (IaaS)
It mainly includes storage facilities, computing facilities and network facilities. This allows businesses to rent the equipment they need to support the cloud. The company maintains control of its software, but leaves equipment, storage and maintenance to IaaS providers such as Amazon Web Services, Microsoft Azure, Google Cloud Computing and Alibaba.
Platform as a Service (PaaS)
It mainly includes development platform, operation management platform and so on. The PaaS provider is designed for software developers to provide a remote platform that doesn’t require the company’s own computer to quickly build the cloud services and applications we all like. The engine farm is an example. Engine Yard is an example.
The origin of cloud computing
Cloud computing does not come from a single event or individual. Several computer scientists in the 1950s and 1960s put forward their basic concepts, but what really led the cloud era was the rise of high-speed Internet access and the pursuit of efficiency in the first decade of this century. As for the name itself, some reports indicate that Google and Amazon used the term cloud computing in 2006, and the MIT Technology Review found this term in the 1996 Compaq Business Plan.
Running these cloud computing centers requires a lot of energy. There are more than 3 million data centers in the United States that use enough energy to power 6.5 million homes, accounting for almost 2% of total US energy use.
Around the world, data centers—some of which are large enough to cover 10 football fields—place tens of thousands of computers called servers, acting as middlemen. When you click on a post on Facebook, they process your request and provide content.
Storing data in a data cloud means giving control to “other people’s computers,” which is terrible. But the cloud is safer than you think. Public providers like Google and Linux employ hundreds of people to maintain and protect data clouds. Therefore, your data is usually safer in the cloud than in smaller companies that keep data locally. This is not to say that data clouds cannot be hacked; in early 2018, serious vulnerabilities called “ghosts” and “disasters” became headlines because they affected almost all computers, including servers.
Many cloud providers automatically convert your information into code, called encryption, before it reaches the server. If they don’t, you can find third-party tools online. As a standard rule of thumb, be sure to create strong passwords to avoid being hacked. Linthicum said: “Security also depends on the wisdom of those who own these accounts.”