Introduction to Virtualization and Cloud Computing

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Introduction to Virtualization and Cloud Computing

Welcome to the session!
This document provides an overview of the topics we'll cover today, along with helpful resources and instructions for hands-on practice.

1. Introduction to Virtualization

What is Virtualization?

Virtualization is the creation of a virtual version of hardware, allowing multiple operating systems to run on a single physical machine.

Types of Virtualization

  • Server Virtualization: Multiple virtual servers on one physical machine.

  • Storage Virtualization: Combining multiple physical storage devices into a single virtual unit.

  • Network Virtualization: Abstracting network resources into a manageable virtual framework.

Key Benefits

  • Efficient resource utilization

  • Cost savings

  • Scalability

  • Simplified management

Deep Dive Knowledge

  • Virtualization uses a hypervisor (like VMware or VirtualBox) to manage VMs.

  • Popular tools include KVM, Xen, and Microsoft Hyper-V.

Real-time Example

A company can run a legacy Windows app on a Linux server using virtualization.

Simple Explanation

Think of virtualization as renting rooms in a house (the physical machine) where each room (VM) has its own tenant (OS).

2. Virtualization vs Cloud

Virtualization is a foundational technology; cloud computing builds on it.

Comparison Table

FeatureVirtualizationCloud Computing
DefinitionTechnology to create virtual environments.Delivery of on-demand computing resources via the internet.
DeploymentLocal (on-premises servers).Hosted on the internet.
ScalabilityLimited by physical hardware.Highly scalable without physical limits.
AccessInternal network only.Accessible from anywhere with an internet connection.

Deep Dive Knowledge

  • Virtualization focuses on optimizing hardware usage.

  • Cloud emphasizes service delivery and flexibility.

Real-time Example

Virtualization is like owning apartments in a building, whereas cloud is like Airbnb where anyone can rent as needed.

3. Cloud Models (IaaS, PaaS, SaaS)

Infrastructure as a Service (IaaS)

  • Definition: Virtualized hardware resources.

  • Examples: AWS EC2, Google Compute Engine.

  • Real-time Example: Hosting a website on AWS EC2 where you control the OS and applications.

Platform as a Service (PaaS)

  • Definition: Platforms for application development.

  • Examples: AWS Elastic Beanstalk, Google App Engine.

  • Real-time Example: Using AWS Elastic Beanstalk to deploy a web app without worrying about the underlying infrastructure.

Software as a Service (SaaS)

  • Definition: Software accessible over the internet.

  • Examples: Gmail, Salesforce.

  • Real-time Example: Using Google Docs to collaborate on documents in real-time.

Simple Explanation

  • IaaS: Like renting a raw apartment and furnishing it yourself.

  • PaaS: Like renting a fully furnished apartment but adding your own decorations.

  • SaaS: Like booking a hotel room where everything is ready.

4. AWS Account Creation

Steps to Create an AWS Account

  1. Visit AWS Free Tier.

  2. Sign Up:

    • Enter your email address and password.

    • Create an account name.

  3. Account Type: Choose Personal or Professional.

  4. Payment Method: Add a valid credit/debit card for identity verification.

  5. Verify Identity: Enter your mobile number for OTP verification.

  6. Select Support Plan: Choose Basic (Free).

  7. Log in to the AWS Management Console.

 

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