Types of Cloud Computing Models

Cloud computing has three main types that are commonly referred to as Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Selecting the right type of cloud computing for your needs can help you strike the right balance of control and the avoidance of undifferentiated heavy lifting.

 Cloud Computing Models

There are 3 main models for cloud computing. Each model represents a different part of the cloud computing stack.

 

     Infrastructure as a Service (IaaS)

• 
  
  IaaS contains the basic building blocks for cloud IT and typically provide access to networking features, computers (virtual or on dedicated hardware), and data storage space.
• It provides you with the highest level of flexibility and management control over your IT resources and is most similar to existing IT resources that many IT departments and developers are familiar with today.
   
  Platforms as a service (Paas)

• It remove the need for organizations to manage the underlying infrastructure (usually hardware and operating systems) and allow you to focus on the deployment and management of your applications.
• This helps you be more efficient as you don’t need to worry about resource procurement, capacity planning, software maintenance, patching, or any of the other undifferentiated heavy lifting involved in running your application.
   
  Software as a Service (Saas)

• It provides you with a completed product that is run and managed by the service provider.
• In most cases, people referring to Software as a Service are referring to end-user applications.
• It offering you do not have to think about how the service is maintained or how the underlying infrastructure is managed; you only need to think about how you will use that particular piece software.
• Ex:- A web-based email where you can send and receive email without having to manage feature additions to the email product or maintaining the servers and operating systems that the email program is running on.