IAAs, PAAS, SaaS, baas, FAAS differences

IaaS、PaaS、SaaS、BaaS、FaaS Differences between these services ：

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

As can be seen from the above architecture diagram ,IaaS At the bottom , The service provider provides the bottom layer / Physical layer infrastructure resources （ The server , Data Center , environmental control , Power Supply , Server room ）, Customers deploy and execute various software such as operating system or application program .

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

PaaS In the middle , Service providers provide infrastructure services , Provide operating system （Windows,Linux）、 database server 、Web The server 、 Domain controllers and other middleware , And middleware layer services such as backup services in the service model . for example IIS,.NET,Apache,MySQL …, The customer controls the upper application deployment and application hosting environment .

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

SaaS At the top , Service providers provide software based solutions , Meet the final needs of customers ; Such as OA、CRM、MIS、ERP、HRM And so on , Customers do not need to consider any form of expertise , Get the complete package , Make their daily work and life easier .

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BaaS：Backend as a Service（ Back end as a service ）

The service provider is the customer ( developer ) Provide services to integrate the cloud back end , If file storage is provided 、 data storage 、 Push service 、 Authentication services and other functions , To help developers develop applications quickly .

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Faas: “Functions as a Service” namely FaaS Functions are services （ Function as a service ）,FaaS yes Serverless Subset , It is also the realization of the whole application Serverless Integrated core services .

Faas An application is a part of the service logic implemented by an application , But unlike the traditional architecture ： They run in containers , It can be triggered by an event , Managed by a third party , The function FaaS There is no need to care about the background server or application services , Just care about your code .

Related reading ： There is no server Serverless summary