The ultimate goal of cloud computing is to provide computing, services and applications to the public as a public facility, enabling people to use computer resources like water, electricity, gas, and telephone. Cloud computing technology is based on three special cloud computing service models, which are popular, effective, flexible, and user-friendly.
Therefore, the basic pattern of cloud architecture is:
1. Infrastructure as a Service: Infrastructure benefits include computers, networks, storage, load balancing equipment, and virtual machines. These hardware and software resources serving end users can be expanded or contracted according to their needs.
2. Software as a Service: As the name suggests, this model includes software parts like virtual desktops, various utility applications, content resource management, email, software, and others. In this model, cloud service providers install, manage, and operate various software, while customers log in and use them through the cloud.
3. Platform-as-a-Service: In this model, the managed service provider assists the customer by providing a working platform, including execution runtime, database, web services, development tools, and operating system, without the customer having to manually allocate resources.
There are four deployment models for cloud computing, each with unique features to meet the different requirements of users.
1. Public cloud: In this model, applications, resources, storage and other services are provided to users by cloud service providers. Most of these services are free, and some of them are paid according to usage. This mode can only be accessed and used using the internet. At the same time, this model is more guaranteed in terms of private information and data protection. This deployment model typically provides scalable cloud services and efficient setup.
2. Private cloud: This kind of cloud infrastructure is dedicated to serving a certain enterprise. It doesn’t matter whether it is managed by itself or by a third party, or managed by a third party. As long as it is used in a correct way, it can bring significant help to the enterprise. However, what this model has to face is that companies are responsible for correcting, checking and other safety issues. Otherwise, they can only bear the consequences of the problems themselves. In addition, the entire system also needs to be purchased, constructed and managed at their own expense. This cloud computing model has a very wide range of positive benefits, and as the model's name suggests, it can provide the owner with a service with sufficient benefits and features.
3. Community cloud: This model is built among multiple companies with similar goals in a specific group, they share a set of infrastructure, and the enterprises also seem to move forward together. The costs incurred are shared by them, so the cost savings that can be achieved are not very large. Members of the community cloud can log in to the cloud to obtain information and use applications.
4. Hybrid cloud: Hybrid cloud is a mixture of two or more cloud computing models, such as public cloud and private cloud hybrid. They are independent of each other, but combined within the cloud to leverage the strengths of the mixed cloud computing models.