Cloud Service Models

Cloud computing offers various service models to cater to different needs. The three primary models are:

Infrastructure as a Service (IaaS)

IaaS provides on-demand access to fundamental computing resources, such as servers, storage, networking, and virtualization. It’s akin to renting raw computing power.

• Key features:
  • Control over hardware and software.
  • Flexibility to deploy any application or OS.
  • Scalability and elasticity.
  • Examples: AWS EC2, Azure Virtual Machines, Google Compute Engine.

Platform as a Service (PaaS)

PaaS delivers a complete development and deployment environment, allowing users to focus on application development without worrying about underlying infrastructure.

• Key features:
  • Pre-configured computing resources.
  • Development tools and frameworks.
  • Database management.
  • Examples: Heroku, Google App Engine, AWS Elastic Beanstalk.

Software as a Service (SaaS)

SaaS delivers software applications over the internet, allowing users to access and use them without installing and managing software on their devices.

• Key features:
  • On-demand access to software applications.
  • No need for software installation or maintenance.
  • Scalability and accessibility.
  • Examples: Salesforce, Google Workspace, Dropbox.

Additional Model: Function as a Service (FaaS)

While not always categorized as a separate model, Function as a Service (FaaS) is gaining prominence. It allows developers to write and execute code without managing servers.

• Key features:
  • Event-driven architecture.
  • Automatic scaling.
  • Pay-per-use pricing.
  • Examples: AWS Lambda, Azure Functions, Google Cloud Functions.

By understanding these service models, organizations can select the appropriate cloud solution based on their specific needs and resources.

Cloud Service Models

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