Generally, the service modes provided by cloud computing include public cloud, private cloud and their combined hybrid cloud.
So what kind of enterprise is suitable for private cloud?
Let's first understand the differences among public cloud, private cloud and hybrid cloud.
The public cloud is to put the built cloud resource pool on the Internet, and all users with permission can use it on demand.
Private clouds are built by enterprises in their own data centers, or by cloud service providers according to users' needs, and then rented to users as a whole, and other users can't use them except the owners;
Hybrid cloud refers to a mixture of public and private clouds. For example, after the private cloud is built, due to business development and other reasons, the resource demand exceeds the resource pool, which needs to be supplemented by applying for using the public cloud as a private cloud. In other words, the public cloud is a cloud provided by a third-party provider for users to use, which can generally be accessed through? Internet? Use, which may be free or low-cost, refers to the cloud used by enterprises themselves. All its services are not provided for others to use, but only for their own use, while hybrid cloud is a combination of the two.
Lift chestnuts by vehicle:
If the private car is a private car, the public cloud is a bus, and the hybrid cloud is a car rental.
Let's talk about the specific differences between public and private clouds.
( 1)? Location of information technology facilities
Private cloud, facilities are generally located within the enterprise.
Public cloud, which is located in a third-party data center.
(2) infrastructure differences
Private cloud, IT infrastructure often adopts different technologies and platforms, which is a heterogeneous platform environment;
For public cloud, the platform is often built through a standard hardware platform, and its platform can meet the needs of most users in terms of cost performance. ?
(3) Business model
Private cloud, enterprises choose to build their own IT systems and private cloud platforms, which requires a large amount of one-time investment to purchase software and hardware equipment, even including the infrastructure of data centers, and the fixed cost is relatively large;
Public cloud, a public cloud service provided by a third party, is charged according to the current cloud computing service. Enterprises can choose to pay monthly or according to the usage of IT resources, with less upfront investment, which is reflected in continuous operating costs. ?
(4) Different degrees of control
As an asset of an enterprise, private cloud is completely owned by the enterprise itself and operated by the enterprise itself. Enterprises can independently control IT systems and transform them according to actual needs;
In public cloud, all infrastructures, including servers, networks and storage, and even software platforms are maintained and managed by service providers. Enterprises generally adopt the mode of renting services, and do not need to manage the basic platform services themselves, which reduces the customization ability.
Simply put, whether an enterprise builds its own free cloud system depends on: company size, industry type, business management process, etc.