The document provides an introduction to cloud computing, detailing its definitions, attributes, architecture, and service models such as SaaS, PaaS, and IaaS. It discusses the growth and practical usage of cloud services, emphasizing on-demand self-service, accessibility, and deployment options. The content includes a Q&A section that addresses common inquiries related to cloud computing.

1. Introduction to Cloud Computing
outreach to Rajarata University
by Sachintana Dissanayake

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> What is Cloud computing?
> Cloud Attributes
> Cloud Architecture
> Cloud Computing Services
> SaaS, Paas, IaaS
> Deployment Models
> Growth of the Cloud
> Cloud Usage
> Q & A
Outline

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What is Cloud
> A visible mass of condensed watery vapour floating in the
atmosphere, typically high above the general level of the
ground

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What is Cloud computing
> Cloud computing
> Style of computing in which dynamically scalable and
virtualized resources are provided as a service over the
Internet
> Cloud services
> Services and solutions that are delivered and consumed in
real-time over internet

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> On demand self service
> Access anywhere, anytime, any device
> Location independent resource pool
> Rapid elasticity
> Pay as you go
Cloud Attributes

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Cloud Architecture

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> Application provided by the service provider
> Mostly via a browser or API
> Examples:
> Mail services like Gmail
> Online office applications
> Picasa, Flicker services
SaaS - Software as a Service

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> Hosted application environment
> Deploy cloud applications
> Examples:
> Google App Engine
> Amazon EC2
> Microsoft Azure
PaaS - Platform as a Service

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> Host data centers and servers
> Provide them as virtualized private services
> Examples:
> Amazon EC2
> Microsoft Azure
> Rackspace
IaaS - Infrastructure as a Service

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> Public Cloud
> Multiple tenants on a shared basis
> Managed by cloud service provider
> Lower upfront cost
> Private Cloud
> Exclusive for single organization
> Managed by the organization
> Lower in the long run
> Hybrid Cloud
> Combination of Public Cloud and Private Cloud
Deployment Models

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Growth of the Cloud

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> Cloud as a data storage
> Cloud as a hosting environment
> For startups or new entrepreneurs
> Deploy business apps to cloud
> Build code and package
> Testing and QA
Cloud usage in practice

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> Application deployment in the Microsoft Azure portal
> What do you need
> Microsoft live account
> Azure subscription
> Visual studio 2013
Demo

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> Microsoft Azure is SaaS, PaaS or IaaS?
> 2 advantages of the scalability in the cloud
Who are the winners

15. Q & A

16. Thank you