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Understand the difference between IAAs, PAAS and SaaS in one picture

2021-01-24 12:00:37 Code2020

From small businesses to global businesses , Cloud is a very hot topic , It's a very broad concept , It covers a lot of online fields . Whether it's application or infrastructure deployment , When you start thinking about moving business to the cloud , It's more important than ever to understand the differences and advantages of various cloud services .

 

There are usually three cloud service models :SaaS( Software as a service ),PaaS( Platform as a service ) and IaaS( Infrastructure as a service ). Each has its own advantages and differences . For your organization to make the best choice , It is necessary for you to understand SaaS,PaaS and IaaS Differences between .

 

The following figure summarizes the main differences between the three models :

 

 

SaaS: Software as a service

Software as a service ( Also known as cloud application services ) Represents the most commonly used option for enterprises in the cloud market . SaaS Using the Internet to provide its users with Applications , These applications are managed by third-party vendors . majority SaaS The application goes directly through Web Browser running , There is no need to download or install anything on the client side .

 

SaaS deliver

Because of its network transmission mode ,SaaS There is no need to download and install applications on every computer , And downloading and installing applications on every computer is exactly IT Employees' nightmares . adopt SaaS, The supplier can manage all potential technical issues , For example, data 、 middleware , Servers and storage , So businesses can simplify their maintenance and support .

 

SaaS The advantages of

SaaS By greatly reducing the installation , Time and money spent on tedious tasks like managing and upgrading software , There are many benefits for employees and the company . This allows technicians to spend more time dealing with more pressing issues and issues within the organization .

 

SaaS Characteristics

There are ways to help you decide when to use SaaS:

  • Manage... In a unified place
  • Hosted on a remote server
  • It can be accessed through the Internet
  • Users are not responsible for hardware or software updates

 

When to use SaaS

SaaS It's the most advantageous of many scenarios , Include :

  • If you are a start-up or a small company , Need to start e-commerce quickly , No time to deal with server issues or software
  • For short-term projects that need collaboration
  • If you need an application you don't use often , For example, tax software
  • Applicable to the need to pass Web And mobile access applications

 

SaaS Example

Google Apps、Dropbox、Salesforce、Cisco WebEx、Concur and GoToMeeting etc.

 

PaaS: Platform as a service

Cloud platform service or platform as a service (PaaS) Provide cloud components for some software , These components are mainly used for applications . PaaS Provides a framework for developers , Enables them to create custom applications based on it . All servers , Both storage and networking can be managed by an enterprise or a third-party provider , And developers can manage applications .

 

PaaS Delivery

PaaS The delivery model of is similar to SaaS, In addition to providing software through the Internet ,PaaS Provides a software creation platform . The platform passes through Web Provide , Give developers the freedom to focus on creating software , And don't worry about the operating system 、 Software update , Storage or infrastructure .

 

PaaS Allows enterprises to use special software components to design and create built-in PaaS Applications in . Because of some cloud properties , These applications or middleware are scalable and highly available .

 

PaaS advantage

Whatever the size of your company , Use PaaS There are many advantages :

  • Make application development and deployment simple and cost-effective
  • Scalable
  • Highly available
  • Enables developers to create custom applications , Without maintaining the software
  • It greatly reduces the amount of coding
  • Automate business strategy
  • Allows easy migration to hybrid models

 

PaaS Characteristics

PaaS There are many features that define it as a cloud service , Include :

  • It's based on Virtualization Technology , That means as the business changes , Resources can be easily expanded or shrunk
  • Provide services to assist in the development of , Testing and deploying applications
  • Many users have access to the same development application
  • Web Services and databases are integrated

 

When to use PaaS

in many instances , Use PaaS It's useful or even necessary . If there are multiple developers working on the same development project , Or must include other suppliers ,PaaS It can provide great speed and flexibility for the whole process . If you want to be able to create your own custom application ,PaaS It's also helpful . Cloud services can also significantly reduce costs , And you can simplify some of the challenges you face when developing or deploying applications quickly .

 

PaaS Example

AWS Elastic Beanstalk、Windows Azure、Heroku、Force.com、Google App Engine,Apache Stratos,OpenShift.

 

IaaS: Infrastructure as a service

Cloud infrastructure services are called infrastructure as services (IaaS), It consists of highly scalable and automated computing resources . IaaS It's full self-service , For accessing and monitoring calculations 、 The Internet , Storage and other services , It allows businesses to buy resources on demand and as needed , Instead of buying all the hardware .

 

IaaS deliver

IaaS Provide cloud computing infrastructure for organizations through virtualization technology , Including servers 、 The Internet , Operating system and storage, etc . These cloud servers usually go through dashboards or API Provide to client ,IaaS The client has complete control over the entire infrastructure . IaaS Provides the same technology and functionality as traditional data centers , Without physical maintenance or management . IaaS Clients still have direct access to their servers and storage , But they all pass through “ Virtual Data Center ”.

 

And SaaS or PaaS contrary ,IaaS The client is responsible for managing the application 、 Runtime 、 operating system , Middleware and data . however ,IaaS Provider management server for 、 Hard drive 、 The Internet , Virtualization and storage . Some providers even offer more services outside the virtualization layer , For example, database or message queue .

 

IaaS The advantages of

choice IaaS There are many benefits , for example :

  • Is the most flexible cloud computing model
  • Easy storage 、 The Internet , Automatic deployment of servers and processing power
  • Hardware can be purchased according to consumption
  • Give customers complete control over their infrastructure
  • Resources can be purchased as needed
  • Highly scalable

 

IaaS Characteristics

In considering IaaS Some of the characteristics to consider are :

  • Resources can be provided as services
  • The cost varies according to the consumption
  • The service is highly scalable
  • Usually include multiple users on a single hardware
  • Give the organization complete control over the infrastructure
  • Dynamic and flexible

 

When to use IaaS

And SaaS and PaaS equally , Some specific scenarios use IaaS It's the best . If you are a startup or a small company ,IaaS Is a good choice , So you don't have to spend time or money creating hardware and software . Some large organizations want full control of their applications and infrastructure , At the same time, I want to buy only the hardware that is actually consumed or needed ,IaaS It's also good for them . For fast-growing companies ,IaaS It might be a good choice , Because you don't have to commit to specific hardware or software when requirements change and evolve . If you're not sure what the new application needs , It will also help , Because it can be expanded or reduced as needed .

 

IaaS Example

DigitalOcean,Linode,Rackspace,AWS,Cisco Metapod,Microsoft Azure,Google Compute Engine(GCE)

 

SaaS vs PaaS vs IaaS

Overall speaking , Each cloud model provides its own specific functions and features , So it's important for your organization to understand these differences . Whether you are looking for Cloud Storage Software , It's also a smooth platform for creating custom applications ,, Or you want to have complete control of the entire infrastructure without having to physically maintain it , You can use cloud services . No matter which option you choose , Moving to the cloud is the future of business and Technology , And it's necessary for us to understand this correctly .

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