Shulou(Shulou.com)06/02 Report--

Recently, on a TV dating show, a female guest clearly mentioned boys who like cloud computing. What is cloud computing? Has become the first criterion for choosing a mate? So, what exactly is cloud computing?

Although the concept of cloud computing has been proposed for more than a decade, there is still a lack of accepted definition. To put it simply, cloud computing is a service that customers get through the network in an on-demand and easy-to-expand way. This service can be IT infrastructure, application software, Internet services and other types.

In essence, cloud computing is a mode of resource utilization. Before cloud computing was proposed, the construction and use of traditional IT software and hardware resources required customers to buy and install them first, and deal with various problems by themselves. On the other hand, cloud computing advocates a similar idea of tap water, that is, families do not have to dig wells, pumps or towers, turn on the faucet and control less.

Similarly, if a customer uses cloud computing, he will not need to purchase servers, storage and other physical resources, build a hardware platform on his own network, or set up a full-time team for software and hardware maintenance, and so on. As long as you log in to the cloud services provided by cloud service providers through the network, you can get the right to use all kinds of software and hardware resources as needed. In other words, cloud computing is changing from buying "computers" to buying "computing power", which helps to reduce costs and improve efficiency.

The service models provided by cloud computing service providers can be divided into three types: infrastructure as a service (IaaS), platform as a service (PaaS) and software as a service (SaaS). An example of eating pizza can be compared to the three service models of cloud computing:

If you want to eat pizza, in the beginning, people usually do everything by themselves, from buying main ingredients, kneading dough, rolling pancakes, sprinkling stuffing, baking in the oven, and so on, just like traditional customers build their own IT system.

Later, when semi-finished pizza can be bought in the supermarket, people do not have to knead the dough cake and just buy it back and put it in the oven to heat it. This can be likened to an IaaS service, and the most basic IT resources are provided by service providers.

In turn, the pizza delivery service is becoming more and more mature, so customers simply order takeout and then have a good meal with their favorite drink on their own table, similar to PaaS. That is, the basic hardware and software environment is provided by the service provider; finally, if the customer goes directly to the pizzeria to eat pizza, then all the services except eating are provided by the service provider, this is the concept of SaaS.

The traditional IT system is built by customers themselves, but with the advent of the era of cloud services, customers have the opportunity to use cloud services to reduce the complexity of their own processing, as shown in:

(1) Infrastructure as a service: provide customers with computing, storage, network and other resources in the cloud data center, allowing customers to deploy business more flexibly, similar to service providers providing semi-finished pizza to customers for independent processing.

(2) platform as a service: provides a software R & D platform, running environment and a capability system that can be invoked by applications, which aims to simplify the complexity of business R & D and deployment, similar to providing takeout services for customers. Simplify customer operation configuration problems as much as possible.

(3) Software as a service: the service provided to customers is an application running on the cloud computing infrastructure of the service provider. Customers need to access the Internet through the browser or the client to use the software online without downloading and installing, such as Hotmail and Office 365, which are often used in the office, similar to customers ordering food in restaurants, which can minimize their burden.

The concept of cloud computing has been more than ten years since its birth, and cloud services have been ubiquitous in our daily work and life. In the past year, nothing in the IT industry has been more popular than artificial intelligence. With the victory of AlphaGo over the top human go players, the wave of artificial intelligence is coming, and various applications such as face recognition, autopilot, voice assistant, image recognition and so on emerge in endlessly. In the era of Smart Internet, cloud computing has become an important carrier for the output of artificial intelligence, block chain, quantum computing and other new technologies. Without cloud services, even advanced technologies can not be realized quickly in the way of services.

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