How to clearly understand and express IAAs, PAAS and SaaS?

Preface

 IaaS 、 PaaS 、 SaaS , It seems that there should still be many people Understand a little confused ：

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IaaS 

Infrastructure-as-a-Service

Infrastructure as a service

PaaS  

Platform-as-a-Service

Platform as a service

SaaS 

Software-as-a-Service

Software as a service

aaS  ：  as-a-Service     Namely service  

Namely service , One is the word , The message is One word ： convenient

What is service , That is to say level 、 The concept of dimension .

I infrastructure  

P platform  

S Software  

My humble opinion

（ Some products involved , For example, you need , Non advertising , If you have any questions, please contact me to delete ）

Before talking about things in combination with the general diagram , I first throw myself out as a R & D brick loader Concise understanding , Just two sentences ：

 

The first sentence ： SaaS Facing the consumer population ,  PaaS Facing the R & D crowd , IaaS face Operation and maintenance 、 Manage the crowd .

OA （SaaS）、 nailing （SaaS）、ERP（SaaS）、CRM（SaaS） etc.

middleware （PaaS）、MySQL （PaaS）、Twilio（PaaS）、Google App Engine（PaaS） etc.

A certain cloud （IaaS）、 Hua mouyun （IaaS）、 Teng mouyun （IaaS） etc.

The second sentence ：  Can be based on IaaS   Integrate Others'  PaaS   Again Add your own code , Then came out one of my own  SaaS  .

The sketch is detailed

IaaS  What is it?

Simple understanding , It's like Bought a cloud service environment .

Equivalent to renting IaaS Off site servers provided by the company , Storage and network hardware , Save maintenance costs and office space .

You don't have to move every time , Hold the computer host 、 Switches and so on these things run .

PaaS  What is it?

Simple understanding , It's like   When we build our own system , Positioning function is needed , Connect with a certain degree Map SDK Or the map location of a German SDK .

So these docking middleware Namely PaaS service .   People are also on their side There are relevant server resources and codes , Provides OPEN API Come out and connect .

Another example is We need to know where a call comes from , Also need to use some SMS related API, So we need to integrate Twilio（ PaaS service ）.

SaaS  What is it?

This is best understood , The software service itself , No more programming , Use it directly .

Like some used at ordinary times CRM Customer relationship management system ,HRM Human resource management system ​ , Of course, there are various Saas product , Not many examples .

Software development 、 management 、 The deployment is left to the care of third-party service providers , We can pay for it , Money can be used （ Of course, it doesn't rule out those who don't need to spend money Saas product ）.

You can see my picture , What I want to express is that it can be understood as most modern SaaS Platforms are built on IaaS or PaaS On the platform .

Okay , That's all for this article .