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📊 | IDC predicts that the domestic private cloud market will grow at a compound annual growth rate of 24% by the end of 28.6


IDC forecasts that the domestic private cloud market will grow at a compound annual growth rate of 24% by the end of 28.6

If you write the contents roughly
Furthermore, hosted private clouds, which provide IT assets owned by vendors as "as a service," have evolved in various ways, such as "industry-specific cloud services" and "local clouds that utilize public cloud technology." There is.

IDC Japan Co., Ltd. announced the domestic private cloud market forecast.According to this, the country of 2020 ... → Continue reading


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Cloud computing

Cloud computing(British: cloud computing) IsインターネットSuch asComputer networkViaComputerresourceTheServicesIt is a usage form provided in the form of[1]. For shortク ラ ウ ドOften called, cloud is in English(I.e.Means. With the global spread of the cloud, online users will be able to receive the services they need, when they need them, streamline all operations, and enhance the creativity of society.

the term

First used as a term in 1996 CompaqIs said to be in-house materials[2].

A shape similar to a “cloud” was created in 1977. ARPANET,[3],Year 1981 CSNETで[4], Used to represent a network of computer equipment, both of which laterインターネットDeveloped into. The term "cloud" refers to the InternetMetaphorHas been used as. The term "cloud" was used in 1993. Distributed computingWas also used in the field of[5].


conventionallyOn-premisesThe main method was to own and operate the IT infrastructure hardware itself in the organization. On the other hand, in this method, the user receives various information processing services from an information system owned by an external organization via a network such as the Internet. What the user needs is a minimum connection environmentPersonal computer,Mobile information terminalSuch asclient, And the service usage fee. A group of computers that actually perform most of the processing (server, Storage, etc.) on the service provider sideData centerIt is installed inside, and the service provider side carries out the asset management and operation and maintenance of them.

The user interface is mainlyWeb applicationIt is provided in the form of.1995 OfインターネットImmediately after the commercial use ofApplication service providerTrial and error has been done with a similar form such asJava appletThe format depended on vendor specific technology such as.2005Begins withAjaxIn the boom ofWeb applicationAfter great potential was found in2006ToGoogle OfCEOIsEric SchmidtAdvocated by.

Services provided in this form are referred to as "cloud computing services" or simply "Cloud service".The service provider is "ク ラ ウ ドService providerOr just "Cloud providerAlso called. As a new paradigm, "Sky Computing"[6], The service when the network is closer to the device is called "fog computing" or "edge computing"[7].. The edge is the outer edge of the network,Content delivery networkThe closest business user to your accessMirror serverIs a typical example.

Wide network access, rapid adaptability, measured service, on-demand self-service, and resource pooling are key characteristics.National Institute of Standards and Technology Defined by (NIST)[8].. NIST explains:[9].

Network, server,storage,ア プ リ ケ ー シ ョ ン, A shared pool of configurable computing resources such as services, andon-demandIt is one of the models in which it can be accessed and quickly provided and utilized with minimal administrative effort or interaction between service providers. This cloud model isUsabilityAnd consists of 5 basic characteristics, 3 service models, and 4 deployment models[10]. — National Institute of Standards and Technology

In the case of the full cloud system, it is sufficient if the terminal and the Internet connection environment are prepared, and it becomes possible to simplify the internal IT equipment. Therefore, mainly for small and medium-sized enterprises with mobility, companies that simplify the internal IT equipment by selecting a method of connecting to a business system on the cloud from a lightweight notebook PC to perform business are rapidly increasing. The adoption of the full cloud system has made it possible to diversify working styles and is also useful in promoting remote work. Since the latter half of the 2010s, we have been aiming for the full digitalization of human work.Digital transformation (DX)Is booming.


2006Similar attempts have been made before the proposal of, but the social impact of this method was not obtained due to the limitations of processing performance and line speed.

1980 eraAlsoValue Added Network (VAN)Existed. However, in the 1980s, communication lines were expensive and slow, and the technical specifications were not standardized, so they were used only to a limited extent so that they could be introduced as one element of business.


Classification by service provided

The classification according to the type of service provided is as follows.

Classification by arrangement form

The classification according to the arrangement form (deployment) is as follows.

  • Public cloud --General services via the Internet. In a narrow sense, it refers only to the public cloud. Services provided online.[11]The point is a service that partially lends the cloud.
  • Private cloud --Companies build and install an environment using this technology in-house,IntranetA form used by the user department via, for example. In the case of own assets such as data centers and servers,ア ウ ト ソ ー シ ン グThere are also cases such as procurement. Compared to the public cloud, investment and operation management are required, but security and asset protection can be strengthened.
  • Hybrid cloud -A form that combines the above public cloud and private cloud. It is possible to use and cooperate according to requirements such as business, data and security.

Utilization technology

The main technologies used internally to realize this method are as follows.

The use of computer resources via networks has been carried out since the dawn of computers in the 1950s, and is basically not a new technology. Traditional examples and terms includemain frameProvide hourly calculation service via network usingValue-added communication network(VAN), orApplication service provider,Network computing,Utility computing, SaaS, etc. exist.

However, behind the spread of the term and service form called "cloud computing" since the 2000s,Open standardThe fact that the procedure common to all over the world has been established and spread has been great. For example, the development of the Internet and Internet-related technologies, variousstandardization, The speed and cost reduction, and on the provider side, the use of servers and software with less restrictions on specific manufacturers due to the spread of open source technology, at various levelsVirtualizationSharing of computing resources by technology and realization of flexible provision according to each user. Conventional similar services are not open due to barriers between services and technical barriers, and the procedure to start using them is complicated, and even if it is the widest, information can only be transmitted within the service to be used. , Anyone in the world can use it with easy procedures, and cooperation between services is easy, which is a big step forward.

Depending on the provider's requirements, depending on the provider, a dedicated line connection may be used instead of via the Internet, and not via virtualization.Bare metal(Physical server unit), original technology,Quality of ServiceDifferentiated by adopting or using a service fee system according to the actual service level. A large-scale provider installs huge data centers in multiple locations around the world and connects them with high-speed lines to improve availability such as disaster countermeasures.Multi national companyUser companies, such as, need only connect to the nearest access point and do not need their own international line.


The term was first used in 2006 by Google CEO OfEric SchmidtIs said to be byGoogle App Engine,Amazon EC2It was popularized around 2006 and 2008 when, etc. appeared.

However, the form of “providing computer processing in the form of a service via a network” has existed in the past.1960From the generationTime sharing systemSuch asData centerUtilization (sharing a centralized virtual environment remotely via a network and charging as a service on a pay-as-you-go or flat-rate basis),1980TeenagerVAN,1991From aroundインターネットBased onASP, And even SaaS. Generally, of these, those that mainly provide the use of packaged software have come to be called SaaS.

It is said that the historical changes in the usage of computers are as follows.

  1. main frameCentralized processing in its heyday
  2. Distributed system(Open system)Client serverDistributed processing such as
  3. インターネットNew centralized processing centered on network
  4. Globally distributed users receive services without being aware of servers (cloud computing)

For example, it is a representative Japanese automobile companyToyotaIn the case of, even before this method was generalizedToyotaIT assetsIntranetでToyota groupAbout 4,000 companies (supplier, Stores, etc.,networkIt provides an environment where the system can be used via.

The chronology since the SaaS terminology has been generalized is shown below.

Similar terms

There are more similar concepts and terms than before, just paraphrasing orBuzz wordThere are many claims that it is.20084 Sun MicrosystemsCEO Jonathan Schwartz said, "What is the cloud?Network computingWas rephrased with a new word." CEO of Oracle in September 2008Larry EllisonCriticized, "We've already done it, the advertising phrase has changed."[20]. It is also argued that there are many companies that the management team leads and promotes on-site technologists on the basis of "I do not know what it is, but it seems to be an industry trend".[21].

On the other hand, unlike the conventional concept, there is a view that opportunities to utilize large-scale infrastructure are open to individuals and small groups, which may lead to social change.[22].

From the point of view of system configurationNetwork computingFrom a provider perspectiveApplication service provider, From the perspective of software provision form, SaaS, from the perspective of billing methodUtility computingIt can be considered that such systems and services are called "clouds" from the user's point of view.

The existing similar terms include the following.


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