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Cloud Computing - is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool.
“Cloud” - is a metaphor for networks and the internet.
Private Cloud - is a cloud infrastructure operated solely for a single organization.
Public Cloud - service provider owns and operates the cloud infrastructure and provides cloud services.
Hybrid Cloud - combination of public cloud and a private cloud or on-premises resources that remain distinct but are bound together.
IaaS - Users only need to pay attention to the system and application layers
PaaS - Users only need to focus on applications and data
Saas - the cloud platform provides all resources, services, and maintenance. Users only need to use applications.
5 Benefits of Cloud Computing
On-Demand self-service - Customers can deploy processing services based on actual requirements on the server running time.
Broad network access - can be accessed in standard mode from various clients, such as mobile phones, laptops, and PADs.
Resource pooling - computing resources of the service provider are centralized so that customers can rent services.
Quick Deployment and auto scaling - cloud computing can rapidly and elastically provide computing capabilities.
Metered services - cloud services are billed based on the actual resource usage, such as CPU, memory, and bandwith consumption of cloud servers.
8 Common characteristics of Cloud Computing
Massive scale - Cloud computing service is on a large scale as it centralizes IT resource supply. This makes cloud computing different from conventional IT.
Homogeneity - can also be understood as standardization, which is similar to power utilization.
Virtualization - has two meanings. One is accurate computing units. If a cake is too large for one person, it is better to divide it into small pieces to share.
Elastic computing - computing means that IT resources can be elastically provided.
Low-cost software - is provided to meet the market competition and requirements. Cloud computing, with low individual technical skill and financial requirements, makes IT easy to use.
Geographic distribution - As the broad access mentioned above, IT services can be provided anytime and anyhere.
Service orientation - Cloud computing is a service model, and the overall design is service-oriented.
Advanced security technology - Public cloud has a large number of users with different requirements. Therefore, advanced security technologies must be adopted to protect cloud computing.