Cloud Computing Fundamentals Beginner Level Tutorial 2 of 2

Cloud Service Models: IaaS, PaaS, SaaS

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Aug 19, 2025

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Overview

Understand the three main cloud service models and when to use each one.

This comprehensive tutorial will guide you through cloud computing fundamentals concepts and practical implementation. Perfect for beginner level learners.

Prerequisites

Cloud Computing Basics

Basic understanding of cloud computing concepts and terminology

Networking Fundamentals

Understanding of basic networking concepts and protocols

Web Technologies

Basic familiarity with web technologies and development concepts

Tutorial Content

Understanding Cloud Service Models

Cloud computing offers three main service models, each providing different levels of abstraction and management responsibility.

1. Infrastructure as a Service (IaaS)

IaaS provides the fundamental building blocks for cloud IT. You rent IT infrastructure—servers and virtual machines (VMs), storage, networks, and operating systems—from a cloud provider on a pay-as-you-go basis.

Examples: AWS EC2, Azure Virtual Machines, Google Compute Engine

2. Platform as a Service (PaaS)

PaaS removes the need for you to manage underlying infrastructure (hardware and operating systems) and allows you to focus on the deployment and management of your applications.

Examples: AWS Elastic Beanstalk, Azure App Service, Google App Engine

3. Software as a Service (SaaS)

SaaS provides you with a complete product that is run and managed by the service provider. In most cases, people referring to SaaS are referring to end-user applications.

Examples: Salesforce, Microsoft 365, Google Workspace