Cloud Computing is another big change after the big turn of the 80s to the client-server.

Cloud Computing (云计算) is Distributed Computing (分布式计算)、Parallel Computing (并行计算)、Utility Computing (效用计算)、Network Storage Technologies (网络存储)、Virtualization (虚拟化)、Load Balance (负载均衡)wait; Traditional computer and network technology development integration products.

From the cloud computing service model point of view, the birth of the individual cloud is actually an extension of the entire cloud computing services as a whole, personal cloud services will also continue to expand the field, its market value will be highlighted, according to personal cloud storage vendor cloud Record storage cloud services survey report shows that there are nearly 50 million users in the use of personal cloud services, personal cloud services to the current accounts receivable has reached 240 million US dollars, its market value of about 40 billion US dollars. Through the above set of figures we can see that at this stage, the personal cloud cloud computing service model is still in a just the beginning stage, as a cloud computing, and other cloud computing service model, Personal cloud in the storage of information, it is also a large number of users of the data uploaded to the cloud computing service provider server equipment, and run by the server in the application of the corresponding calculation, the individual user can use the terminal Client software accesses personal cloud services. This is the same with the public cloud and private cloud technology are the same.

By making the distribution spread over a large number of distributed computers, rather than the local computer or remote server, the operation of the enterprise data center will be more similar to the Internet. This allows enterprises to switch resources to the needs of the application, according to the needs of access to computers and storage systems.

Such as from the ancient single generator model turned to the power plant centralized power supply mode. It means that the computing power can also be used as a commodity circulation, like gas, water and electricity, easy access, low cost. The biggest difference is that it is transmitted over the Internet.

Public cloud with Private Clouds

In simple terms, cloud services can be required by the enterprise hardware and software, information on the network, at any time, location, the use of different IT equipment connected to each other to achieve data access, computing purposes. At present, the common cloud service has two kinds of public cloud and private clouds.

Public cloud Low cost

Public cloud is the most basic service, a number of customers can share a service provider's system resources, they do not have to set up any equipment and equipped with managers, you can enjoy professional IT services, which for general entrepreneurs, SMEs , Is undoubtedly a good way to reduce costs. Public clouds can also be broken down into three categories, including Software-as-a-Service, SaaS(软件即服务)、Platform-as-a-Service, PaaS(平台即服务) and Infrastructure-as-a-Service, IaaS(基础设施即服务).

We are commonly used in Gmail, Hotmail, online albums are a kind of SaaS, mainly to a single network software as the leading; as PaaS service form to provide application development, deployment platform to speed up the user to write Customer Relationship Management (客户关系管理) , Enterprise Resource Planning (企业资源规划) and other systems of time, users must have a wealth of Information Technology knowledge.

IaaS meets the different needs of the enterprise

The above-mentioned low cost of public cloud services, but the use of flexible enough, do not meet this service model of small and medium enterprises, may wish to consider "infrastructure as a service (IaaS)" IT resource management model. The IaaS architecture is a combination of virtualization technology and cloud services that directly enhance the operational capabilities of the entire IT system. Current IaaS service providers, such as the first line, will provide top-of-the-line hardware, software and services , Such as servers, storage systems, network hardware, virtualization software, and so on. IaaS allows companies to freely choose to use those software, hardware and services, small and medium enterprises can be based on industry needs, the scale of development, building the most suitable for their IT infrastructure system.

This service model can bring multiple advantages for small and medium enterprises, one, they do not have to spend a huge IT infrastructure equipment, but can enjoy the same professional services; Second, the management can be based on the scale of business development, Need to service portfolio; Third, when there are new technologies, enterprises can always be upgraded to the service provider requirements, do not have to worry about increasing the hardware; Fourth, IaaS service providers have a professional team of consultants, small and medium enterprises can be exempted But the system management, IT support spending.

Large enterprises tend to set up Private Clouds

In addition, the economic environment in recent years, intense competition, even if large enterprises are concerned about the cost savings, and therefore also need cloud services. Although public cloud service providers need to comply with industry regulations, but large enterprises (such as finance, insurance industry) in order to take into account the industry, customer privacy, it is impossible to store important data to the public network, it tends to set up a private cloud network.

IaaS

IaaS(Infrastructure-as-a- Service): Consumers can access services from a complete computer infrastructure over the Internet.

PaaS

PaaS(Platform-as-a- Service): PaaS actually refers to the software development platform as a service to SaaS model submitted to the user. Therefore, PaaS is also an application of the SaaS model. However, the emergence of PaaS can accelerate the development of SaaS, especially to speed up the development of SaaS application speed.

SaaS

SaaS(Software-as-a- Service): SaaS is a way to provide software through the Internet, users do not need to buy software, but to the provider to rent Web-based software, to manage business activities.

On demand

As the name suggests, on-demand computing can be computer resources (processing capacity, storage, etc.) packaged into similar facilities such as measurable services. In this model, the customer only pays for the processing power and storage they need. Those companies with large demand peaks and associated with a much lower normal use period are particularly benefiting from utility calculations. Of course, the company needs to pay more for peak use, but when the peak is over and normal usage patterns are restored, their costs will drop rapidly.

The clients that calculate services on demand basically use these services as offsite virtual servers. No need to invest in their own physical infrastructure, the company and the cloud service providers to implement the existing pay between the program.

On-demand computing itself is not a new concept, but it is a new life for cloud computing. In the past years, on-demand computing by a server through a time-sharing way to provide.

"Internet of things is connected to the Internet of things." This has two meanings: first, the core and foundation of the Internet of Things is still the Internet, is the extension and expansion of the Internet on the basis of the network; second, its client extension and extended to any items and items between the information Exchange and communication.

Internet of Things of Business model:

1.MAI(M2M Application Integration), MaaS;

2.MaaS(M2M As A Service), MMO, Multi-Tenants.

With the increase in the amount of Internet of things business, the demand for data storage and calculation will bring the "cloud computing" ability requirements:

1.Cloud computing: from the computing center to the data center in the initial stage of the Internet of things, PoP can meet the demand;

2. In the advanced stage of the Internet of things, there may be MVNO / MMO operators, the need for virtualization, cloud computing technology, SOA and other technologies to achieve the combination of Internet services: TaaS (everyTHING As A Service).

Cloud Security is a new term evolved from "cloud computing". Cloud security strategy is: the more users, the more secure each user, because such a large user base, enough to cover every corner of the Internet, as long as a site was linked to a horse or a new Trojan virus, It will be intercepted immediately.

"Cloud security" through the network of a large number of clients on the network of software behavior abnormal monitoring, access to the Internet Trojans, malicious programs, the latest information, push to the server side for automatic analysis and processing, and then the virus and Trojan solution distribution To each client.

Cloud storage is in the cloud computing concept extends and developed a new concept, refers to the cluster application, grid technology or distributed file system and other functions, the network will be a large number of different types of storage devices through the application software Together to work together to jointly provide data storage and business access functions of a system. When the cloud computing system computing and processing is the core of a large number of data storage and management, cloud computing systems need to configure a large number of storage devices, then the cloud computing system is transformed into a cloud storage system, so cloud storage is a data storage And management as the core of the cloud computing system.