IaaS, PaaS, SaaS Interactive Cloud Lesson

Community College Cloud Computing

Welcome, Future Cloud Professionals!

Today’s goal: By the end of this lesson, you will be able to explain the difference between IaaS, PaaS, and SaaS using beginner-friendly examples.

Imagine you want to launch an online business, create a student club website, build a mobile app, or use online tools for school. You have choices: build everything yourself, use a platform that handles part of the work, or simply use a finished application.

🧱

IaaS

Infrastructure as a Service

You rent computing building blocks such as servers, storage, and networks.

🛠️

PaaS

Platform as a Service

You deploy your code while the platform manages many technical details.

📱

SaaS

Software as a Service

You use a complete app through a browser or phone.

Beginner Big Idea

Cloud Computing Is Like Renting Instead of Buying

Cloud computing means using technology resources over the internet. Instead of owning all the hardware and software yourself, you use resources from a cloud provider when you need them.

Real-world application: A new student club wants to launch a website for event sign-ups. The club has no server room, no full-time IT staff, and only a small budget. Cloud services let them start quickly without buying expensive equipment.

What changes between IaaS, PaaS, and SaaS?

Model	You Manage	Provider Manages	Best When...
IaaS	Operating system, apps, data, settings	Servers, storage, networking, data center	You need control and customization.
PaaS	Your code, data, app design	Servers, runtime, scaling, operating system	You want to focus on building and deploying apps.
SaaS	Your account, files, settings, usage	The entire application and infrastructure	You just need to use software immediately.

Core Content

Meet the Three Cloud Service Models

🧱

IaaS

Think: “I rent the computer parts.”

You rent virtual machines, storage, and networks. You still manage the operating system and applications.

Examples: Amazon EC2, Azure Virtual Machines, Google Compute Engine.

🛠️

PaaS

Think: “I bring my code.”

You upload your application. The platform handles servers, updates, scaling, and runtime environment.

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

📱

SaaS

Think: “I use the app.”

You log in and use a finished product. You do not manage servers, platforms, or code.

Examples: Gmail, Microsoft 365, Google Docs, Canvas, Zoom.

Quick Reflection

Which service model do you think you use most often as a student? Why?

Your response will appear in your final summary.

Interactive Analogy

The Pizza Analogy

Cloud service models are often compared to pizza. The more the provider handles, the less you have to manage.

Choose a Pizza Style

Select one:

Responsibility Stack

Cloud connection: IaaS gives you many ingredients and tools, PaaS gives you a ready platform to build on, and SaaS gives you the finished product.

Hands-On Practice

Sort the Cloud Services

Drag each service into the correct category. If drag-and-drop is difficult, click a card and then click a category box.

Service Cards

🧱 IaaS

Infrastructure building blocks

🛠️ PaaS

Platform for deploying code

📱 SaaS

Finished software application

Sort the cards, then check your work.

Real-World Decision Making

Choose the Best Cloud Model

For each situation, choose the cloud service model that best fits the need.

Scenario 1: Student Club Website

Your club has simple website code and wants to publish it quickly without managing servers.

Scenario 2: Online Class Tool

Your instructor uses Canvas so students can submit assignments, take quizzes, and check grades.

Scenario 3: Custom Lab Server

A cloud computing class needs virtual machines where students can configure operating systems and install software.

Choose a model for each scenario.

Knowledge Check

Quick Quiz

Answer the question to receive feedback.

Wrap-Up

Cloud Service Model Summary

Badges Earned

Cloud Beginner

Your Personal Study Notes

Click the button below to generate your study summary.

Exit Ticket: In one sentence, explain the difference between IaaS, PaaS, and SaaS to someone who has never studied cloud computing.Your answer: