云计算的劣势有(云计算有什么特点和优势)

With the development of cloud computing, almost every enterprise plans to use cloud computing or is currently using it, but not every enterprise uses it. Same type of cloud pattern. There are actually three different cloud models, including public cloud, private cloud, and hybrid cloud. To help determine which cloud model best suits an enterprise's needs, here's a look at how these three models compare and contrast.
1. Public cloud
Public cloud usually refers to a cloud that third-party provider users can use. Public cloud is generally available through the Internet and may be free or low-cost. . There are many instances of this cloud that provide services across today's open public networks. The greatest significance of the public cloud is to provide attractive services to end users at low prices and create new business value. As a support platform, the public cloud can also integrate upstream service (such as value-added services, advertising) providers and downstream end users to create new value chains and ecosystems. It enables customers to access and share basic computer infrastructure, including resources such as hardware, storage and bandwidth.
Advantages: In addition to providing services over the network, customers only pay for electricity for the resources they use. Additionally, since organizations have access to the service provider’s cloud computing infrastructure, they don’t need to worry about installing and maintaining it themselves.
Disadvantages: related to safety. Public clouds often fail to meet many security compliance requirements because different servers reside in multiple countries with various security regulations. Also, network issues can occur during peak periods of online traffic. While the public cloud model is often cost-effective by offering pay-as-you-go pricing, its expenses can add up quickly when moving large amounts of data.
2. Private Cloud
Private Clouds (PrivateClouds) are built for the sole use of one customer, thus providing the most effective control over data, security and service quality. The company owns the infrastructure and controls how applications are deployed on this infrastructure. Private clouds can be deployed within the firewall of a corporate data center, or they can be deployed in a secure colocation location. Private clouds greatly protect security issues, and some companies have begun to build their own private clouds.
Advantages: Provides greater security because a single company is the only designated entity that can access it. This also makes it easier for organizations to tailor their resources to meet specific IT requirements.
Disadvantages: Installation costs are high. Additionally, enterprises are limited to the cloud computing infrastructure resources specified in the contract. The high security of a private cloud can make accessing it from remote locations difficult.
3. Hybrid cloud
Hybrid cloud is a combination of public cloud and private cloud service methods. Due to security and control reasons, not all enterprise information can be placed on the public cloud, so most enterprises that have applied cloud computing will use a hybrid cloud model. Many will choose to use both public and private clouds, and some will also build public clouds at the same time. Because public clouds only charge users for the resources they use, centralized clouds will become a very cheap way to handle peaks in demand. For example, for some retailers, their operational needs will increase sharply with the arrival of the holidays, or some businesses will experience seasonal increases. At the same time, hybrid cloud also provides a good foundation for elastic needs for other purposes, such as disaster recovery. This means that the private cloud uses the public cloud as a disaster recovery platform and uses it when needed. This is a very cost-effective concept. Another good idea is to use the public cloud as a platform of choice and select other public clouds as disaster recovery platforms.
Advantages: Allows users to take advantage of public and private clouds. It also provides great flexibility for applications to move across multi-cloud environments. In addition, the hybrid cloud model is cost-effective because enterprises can decide to use more expensive cloud computing resources as needed.
Disadvantages: Difficult to maintain and protect because the setup is more complex. Additionally, because hybrid cloud is a combination of different cloud platforms, data, and applications, integration can be a challenge. Major compatibility issues also arise between infrastructures when developing hybrid clouds.