What is a “hybrid cloud” that also uses on-premises systems in combination?

(Illustration: Musashi Kishimoto)
(Illustration: Musashi Kishimoto)
[Click image to enlarge]

 A hybrid cloud refers to a system configuration that combines a cloud service environment provided by a cloud provider and an on-premises environment in which a company operates its own servers.

 With cloud services, you can use computer resources as much as you need when you need them. In addition, since the operation and maintenance of servers and network equipment can be entrusted to the business operator, it is also characterized by the fact that the number of manpower required for these operations is reduced for the user company. On-premises, on the other hand, has features such as the ease of developing systems based on company specifications and applying security policies.

 Therefore, the hybrid cloud is a combination of these in the right place. For example, a mission-critical system that handles highly confidential information is on-premises, and a web server that is open to the public is operated as a cloud service with an emphasis on scalability. Technologies useful for hybrid clouds, such as APIs (Application Programming Interfaces) for integrated management of systems distributed over on-premises and cloud services, are also being developed.

 However, in order to make full use of the hybrid cloud, it may be necessary to review the network design. For example, a company that has traditionally routed all communications from its bases through its own data center may decide to separate communications to the data center and to the cloud to increase the response speed of communications to the cloud.

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