How to distinguish PAAS, IAAs and SaaS?

One 、 Infrastructure as a service (IaaS ： Infrastructure as a Service)

1、 Put the calculation basis ( The server 、 Network technology 、 Storage and data center space ) As a service to customers . It also includes the provision of operating systems and virtualization technologies 、 To manage resources . Consumers go through Internet You can get services from the perfect computer infrastructure .

Two 、 Platform as a service (PaaS：Platform as a Service）

2、PaaS In fact, it refers to the software development platform as a service , Suppliers provide services beyond the infrastructure , A complete set of solutions for software development and operation environment , That is to SaaS To submit to the user . therefore ,PaaS It's also SaaS An application of patterns . however ,PaaS The emergence of can accelerate SaaS The development of , Especially to speed up SaaS Application development speed .

3、 ... and 、 Software as a service (SaaS：Software as a Service)

Is a delivery model , The application is hosted as a service , adopt Internet For users ; Help customers better manage their IT Projects and services 、 Make sure they IT Quality and performance of the application , Monitor their online business .