What is the concept of cloud computing?

When people's needs are increasing, such as browsing the web and watching movies ... people concentrate computer resources and application services on the Internet, which becomes "cloud computing". In other words, cloud computing is to let users use applications, data and services in the cloud through the Internet.

Cloud computing has three common service modes.

IaaS、PaaS、SaaS

Iaas: Infrastructure as a Service (Infrastructure as a Service)

IaaS is sometimes called hardware as a service, which provides hardware-related services.

PaaS: Platform as a Service (Platform as a Service)

Based on hardware, platform development can be carried out at this layer. PaaS service providers provide various solutions for developing and distributing applications, such as virtual servers and operating systems, as well as database systems.

SaaS: Software as a Service (Software as a Service)

This is our daily contact with the most services. At this level, we can directly access and use the service functions. Such as sending and receiving emails, ordering goods, viewing flight information through web browsers and other specific application services.