Due to the constant competition among large suppliers, the cost of some cloud computing services, especially the prices of virtual machines, has continued to decline. Some evidence shows that the cost of other cloud services will also decrease because cloud computing service providers want to increase their workload and shift workload from the company's data center to cloud computing, which may be a good news.
What is cloud computing?
Cloud computing is a service that delivers on-demand computing, including applications, storage, and processing capabilities, often on the Internet, on a pay-as-you-go basis. In addition to having its own computing infrastructure, companies can also lease applications or servers from cloud service providers. Suppliers can also benefit from significant economies of scale by providing the same services to different customers.
One of the benefits of using cloud computing services is that companies can avoid the upfront cost and complexity of owning and repairing IT infrastructures. Instead, they only need to pay for what they use.
Cloud computing enhances a large number of services, from consumer products from Google Mail and Netflix to corporate workloads, providing the required processors for artificial intelligence.
Cloud computing is becoming the default choice for many services. When software vendors try to change the subscription model, they gradually provide their applications to the services that Internet companies need, rather than stand-alone products. However, cloud computing may also be flawed because it may create new costs and dangers for the company that uses it.
Why is it named cloud computing?
An important concept of cloud computing is the positioning of services. Many operating systems used by hardware or cloud computing are user-independent (although there are exceptions). It is for this reason that the cloud metaphor has been borrowed from the old network diagrams. In this diagram, the public telephone network (and later the Internet) is often represented in the cloud, meaning that its underlying technology is not relevant.
Cloud computing development
As early as 2000, the term cloud computing appeared, but the concept of computing as a service existed in the 1970s, when the computer division allowed companies to rent hosts instead of having them buy it. These time-sharing services were largely replaced by the rise of personal computers and were later replaced by enterprise data centers where companies could store large amounts of data.
However, the concept of renting computer capabilities has been seen many times in application vendors, utility computing, and network computing in the late 1990s and early 2000s. Then, with the advent of software-as-a-service ultra-large cloud computing providers, cloud computing services are beginning to emerge.
How big is cloud computing?
According to international documentation, the cost of establishing a cloud computing supporting infrastructure accounts for more than one-third of the global IT spending. At the same time, as the computing work continues to move to the cloud world, both the cloud services provided by the vendors and the private cloud services established by the company itself, the cost of information technology within traditional enterprises is also continuing to decline.
Research predicts that one-third of corporate IT spending this year will be spent on hosting and cloud services, which means that it will increasingly rely on resources such as external infrastructure, management, and security services. The analysis agency Gardner predicts that one-half of the companies currently using cloud computing services in the world will use the information technology industry's expenses for cloud computing in 2021.
Infrastructure as a Service (IaaS)
There are three models of cloud computing. Infrastructure-as-a-service refers to the computer components that can be rented. There are physical and virtual servers, storage functions, and networks of people. For companies that want to re-establish applications and control almost all of them, infrastructure-as-a-service is Attractive. A study conducted by Oracle found that two-thirds of the users of infrastructure-as-a-service stated that using an online infrastructure makes innovation easier and reduces the time spent on new applications and services, while also greatly reducing Repair fees. However, half said that IaaS is not safe enough for most important data.
Platform as a Service (Paas)
Paas is the next level of Iaas. It is also the basic storage, interpersonal network and virtual server. Paas also includes the tools and software developers need to build applications, such as: middleware, database management, operating system and development tools, etc. .
Software as a Service (Saas)
Saas is the delivery of application as a service (Paas). It may be a cloud computing version that most people are accustomed to. It is a basic hardware, and the operating system has nothing to do with the end user because the end user will get the service through a web browser or an application. .
Researchers from international literature sources stated that Saas is currently the dominant cloud computing model in the medium term, and it will be the future. It will account for two-thirds of all public computing expenditures in 2017 and will drop slightly below 60% by 2021. Saas costs are made up of application and system infrastructure software, and international literature indicates that buying applications will be the main expense, accounting for more than half of all public computers in 2019. By 2021, the cost of customer relationship applications and enterprise resource management applications accounted for more than 60 percent of all cloud computing. There are many types of applications delivered through Saas, such as: SalesForce customer relationship management application, Microsoft Office 365.
The advantages of cloud computing
Each type of cloud computing service has its own advantages, but fundamentally speaking, using cloud computing services means that companies do not need to purchase or repair their own computing infrastructure, do not need to purchase servers, only need suppliers to update applications or operating systems, Stop using and handle outdated hardware and software. For commoditized applications such as e-mail, switching it to a cloud provider is more useful than relying on internal technology. Companies that specialize in managing these services and maintaining the security of these services may be more capable and experienced than those of smaller companies, so that cloud services can provide end users with a safer and more efficient service.
The use of cloud services means that companies do not need lengthy purchases, nor do they need to pay large-scale costs in advance, they can expedite project execution and test their concepts, because company employees only pay for the resources they use.
The disadvantage of cloud computing
First, cloud computing is not necessarily cheaper than other forms of computing. Second, some companies may be unwilling to host information on servers used by competitors. Furthermore, using a Saas application may mean that you and your competitors are using the same application, so it is difficult to create a unique competitive advantage for the company.
Is cloud computing more secure?
Some companies do doubt the security of cloud services, although at present it is relatively safe. The security of cloud computing depends to a large extent on the security of existing systems. Compared with the internal systems managed by multiple teams, the supervision systems supervised by engineers and dedicated to protecting the infrastructure are more secure. However, concerns about security still exist, especially between cloud services. As a result, some cloud service security tools have appeared that supervise data moving between cloud service platforms. These tools can identify improper use of data in cloud services, illegal downloads, and malware. However, there is a financial and performance impact, these tools can reduce the return on investment of cloud services by 5% to 10%, and their performance will be reduced by 10% to 15%.
Public cloud
The public cloud is a classical cloud computing model. In this model, users can acquire a large amount of computing power (whether it is Iaas or paas or saas) on the Internet. An important advantage of this model is its ability to rapidly expand services. Cloud computing providers have a lot of computing power and they can distribute these capabilities among multiple consumers. Their relatively large size means that they have enough spare capacity, and if a particular consumer needs more resources, they can also be satisfied as quickly as possible without having to allocate resources from elsewhere.
Private Cloud
Private clouds allow organizations to profit from the advantages of some public clouds, but do not have to worry about the control of data and services, because private clouds are protected by corporate firewalls.
Companies can accurately control where data is stored, and can build infrastructure as they wish, and give developers access to a wealth of computing power that can be used on demand, without compromising security. However, that extra security requirement requires more investment, because few companies will reach the scale of Amazon Web Services, Microsoft, and Google, which means they can't create the same economies of scale. For companies that require additional security, the private cloud is still a useful springboard to help them understand cloud services or rebuild internal applications for the cloud system, and then convert the private cloud into a public cloud.
Hybrid Cloud
Hybrid cloud is a place where everyone is in the real world. It contains both public and private clouds, as well as many other vendors and different levels of cloud services. TechRepublic research shows that hybrid cloud is mainly used in disaster recovery plans and expanding existing data centers to avoid hardware costs.
Is cloud computing related to geographic location?
In fact, the results show that this is where the cloud system is critical. First of all, there is a problem of delay. If the application comes from the other side of the earth or is on the other side of the crowded network, then you may find that it is a little slower than the local connection.
Followed by the issue of data sovereignty. Many companies, especially European companies, have to worry about where data is processed and where it is stored. For example, European companies may worry about whether their customer data is stored in data centers in the United States, or whether US law enforcement agencies can obtain customer data owned by US companies. As a result, large cloud service providers have established a reasonable network of data centers in order to achieve the preservation of data in their own fields.
In Germany, Microsoft has gone further, providing Azure cloud computing services from two data centers that have been established, making it difficult for US authorities and other agencies to obtain stored customer data. The data was controlled by an independent German company and Microsoft could not obtain the data without the permission of the customer or the data trustee.
What are the large cloud computing service providers?
When it comes to Iaas and Paas, there are only a few large cloud service providers, leading the Amazon network, followed by Microsoft Azure, Google, IBM, and Alibaba. According to statistics from the collaborative research team, the following companies have grown faster, but all of their revenues are still lower than Amazon's network services.
Cloud computing services have a price war?
Due to the constant competition among large suppliers, the cost of some cloud computing services, especially the prices of virtual machines, has continued to decline. Some evidence shows that the cost of other cloud services will also decrease because cloud computing service providers want to increase their workload and shift workload from the company's data center to cloud computing, which may be a good news. At the same time, prices will be further reduced, because even in the commercialization of cloud service infrastructure services, there are still great advantages.
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