Usually, the service models provided by "cloud computing" include "public cloud", "private cloud" and "hybrid cloud" which combines the two.
So what kind of enterprise is suitable for private cloud?
We first understand what is the difference between public cloud, private cloud and hybrid cloud?
Public cloud is to put the built cloud resource pool on the Internet, and all users with permission to use it can use it as needed;
private cloud is to be built by enterprises in their own data centers, or by cloud service providers based on user needs. It is then leased to users as a whole. Except for the owner, other users cannot use it.
Hybrid cloud refers to the mixture of public cloud and private cloud. For example, after the private cloud is built, the demand for resources exceeds the resources due to business development and other reasons. The pool needs to be supplemented by applying to use the public cloud as a private cloud. That is to say, a public cloud is a cloud provided by a third-party provider to users, which can generally be used through the Internet, and may be free or low-cost. A private cloud refers to a cloud used by the enterprise itself, and all its services are not available to others. , only for your own use, while the hybrid cloud is a combination of the two.
Take the vehicle as an example:
if you say private cloud private car, then the public cloud is the bus, and the hybrid cloud is the car rental.
Let’s talk about the specific difference between the public cloud and the private cloud
(1) IT facility location
Private cloud, facilities are generally located in the enterprise Internal
Public cloud, the facility is located in a third-party data center
(2) Infrastructure differences
Private cloud, IT infrastructure often uses different technologies and platforms, is a heterogeneous platform environment;
public cloud, the platform is often through It is built on a standard hardware platform, and its platform can meet the needs of most users in terms of price.
(3) Business model
Private cloud. Enterprises choose to build their own IT systems and private cloud platforms, which require a large one-time investment in purchasing software and hardware equipment, and even the infrastructure of data centers. The fixed cost is relatively large;
public cloud , The public cloud services provided by third parties are charged according to the current cloud computing services. Enterprises can choose to pay by month or by the usage of IT resources. The initial investment is less, which is reflected in the ongoing operating costs.
(4) Different degrees of control
Private cloud, as an enterprise's assets, is completely owned by the enterprise and operated and maintained by the enterprise itself. The enterprise can independently control the IT system and transform it according to actual needs;
public cloud, all infrastructure, including Servers, networks and storage, and even software platforms are maintained and managed by service providers. Enterprises generally use the rental service model, which does not need to manage basic platform services by themselves, but reduces their customization capabilities.
In short, whether an enterprise builds its own free cloud system depends on: company size, industry type, business management process, etc.
