This document discusses the different cloud service models of Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). IaaS provides basic computing resources like servers and storage. PaaS provides development tools and platforms for building applications. SaaS provides complete software solutions that are accessed via the internet. Popular providers for each service model are also mentioned.

1. Cloud Service Model
Yong Heui Cho @ Mokwon University
Some of slides are referred to and all credits should go to:
[1] K. Chandrasekaran, Essentials of Cloud Conputing, CRC Press, 2015.

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Cloud Service
6. Cloud Computing Architecture
7. Cloud Deployment Model
9. Cloud Service Model
10. Serverless Website

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Cloud Service Model

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Vendors

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IaaS
• Infrastructure as a service

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Services by IaaS
• Compute: computing as a service (CPU
and RAM of VM)
• Storage: back-end storage for VM
images and files
• Network: network as a service (virtual
router, switch, and bridge for VM)
• Load balancers: load balancing as a
service

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Popular IaaS Providers

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PaaS
• Platform as a service

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Services by PaaS
• Programming languages: Java,
JavaScript
• Application frameworks: Node.js,
Vue.js, Nuxt.js
• Databases: PostgresSQL
• Other tools

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Popular PaaS Providers

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SaaS
• Software as a service

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Services by SaaS
• Business services
• Social networks
• Document management
• Mail services

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Popular SaaS Providers