Cloud computing is also known as virtual server computing. It is a computer model that uses computer technology developed based on the internet. The infrastructure complexity of this service makes us think of as a cloud. In other words, cloud computing is the virtualization of applications and computing resources. Instead of having multiple real servers, you only need the internet to use virtualized resources. The word cloud itself is a metaphor for the Internet.
At this point capabilities related to information technology are provided as services. With the services available on the internet, businesses do not need to buy hundreds of computers and software and do not need to care about infrastructure, information technology, but all of these are the suppliers in the cloud. The clouds will take care of them.
Advantages of cloud computing
The most fundamental benefit we see is the investment in infrastructure for businesses, both in terms of machinery and people:
– Using dynamic computing resources: when applying this technology, businesses only need to invest in the infrastructure in accordance with the requirements of the business and an instant, without redundant waste. When there is a need to expand, businesses do not need to think about how many additional servers and workstations are invested, but just give the specifications, the cloud computing providers will find themselves. Search for free resources to provide to businesses.
– Reduce costs: as a service, businesses are proactive in cutting costs to buy and sell maintenance resources. Businesses don’t need a team of experts to buy servers, install servers, and maintain them.
– Reduce the complexity of the business need: businesses may not need to invest a small team to operate the system, but all these jobs have been provided by cloud computing providers.
Disadvantages of cloud computing
All-cloud electricity model still has some disadvantages:
– Privacy: does the user information and data stored on the cloud ensure privacy, and will the information be used for other purposes without the owner knowing it?
– Availability: cloud services may be lagged or have objective risks such as disconnected internet connection. This can interfere with your use of the services and access to your data for a period of time affecting your work.
– Data loss: when applying cloud computing technology, we completely rely on the provider, if for some reason the provider stops working or no longer provides services, then the user must copy. Saving data from the cloud to a personal computer is time-consuming, and there may be cases where irreversible data is always lost.
– Ownership: when the user no longer uses the provider’s cloud computing service, will data duplication be made convenient, and will the provider destroy all customer data before and after copying or not?
– Security issue: the concentration of data in the cloud aims to increase security, but it is also the cause of the attack of data theft by hackers