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Cloud And Grid Computing

Differentiate between the service-oriented models of Cloud Computing (IaaS, PaaS, SaaS) and the application-specific architecture of Grid Computing.

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What is Cloud Computing?

Definition of cloud computing and on-demand resources.

Cloud computing is the delivery of computer-based services—such as servers, storage, databases, and software—over the Internet (the "cloud"). Instead of keeping everything on your personal hard drive, you rely on remote resources.

Think of it like renting computing power instead of buying it outright.

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The 3 Cloud Service Models

Comparison of IaaS, PaaS, and SaaS.

IaaS (Infrastructure)

  • Provides: Hardware, VMs, servers, network, storage
  • Use: Outsourcing hardware to configure and deploy custom software
  • Perk: Saves hardware setup and maintenance costs

PaaS (Platform)

  • Provides: Environment to develop, test, and deliver apps
  • Use: Pre-configured Apache server with MySQL/Python
  • Perk: No worrying about underlying infrastructure setup

SaaS (Software)

  • Provides: On-demand access to application software
  • Use: Google Docs, Microsoft Office 365, DropBox
  • Perk: Requires only a license/subscription; no installation

Real-world Application: To harness these benefits, the Government of India launched an ambitious cloud initiative named 'GI Cloud' (MeghRaj).

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Match the Cloud Model

Match IaaS, PaaS, SaaS to their descriptions.

NoteMatch the cloud computing term with its correct real-world example.
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Terms

Definitions

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Grid Computing: The Virtual Supercomputer

Defining grid computing and contrasting it with cloud.

Unlike the cloud, which provides general services to individuals, Grid Computing is application-specific. It connects geographically dispersed and diverse (heterogeneous) computational nodes to form a massive "virtual supercomputer."

These independent computers temporarily pool their resources (like memory and processing power) to solve a single large, computationally intense task.

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Cloud vs Grid

Visual contrast between Cloud and Grid architectures.

clean side-by-side comparison, consistent visual treatment for both sides, same scale and style, pastel color coding to distinguish categories, elegant typography, white background, generous whitespace. On the left: 'Cloud Computing' showing a centralized cloud icon dispensing different services down to individual users. On the right: 'Grid Computing' showing diverse devices pooling computing power together into a central system to solve one big problem.
Click to zoom

While the Cloud provides general services from a centralized provider down to users, a Grid pools power upward from scattered nodes to solve one huge task.

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Cloud or Grid?

MCQ testing the difference between cloud and grid computing.

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How does Grid Computing primarily differ from an IaaS Cloud service?