• “Cloud” is actually a metaphor forthe Internet.• Cloud computing is a paradigm inwhich information is permanentlystored in servers on the Internet.
In Business View:When it’s smarter to rentthan to buy…..
Techie’s View:It offers the ability to accesssoftwares or informationthat can be delivered on-demand, over the internet,without the need to store itlocally……
• The cloud is a large group ofinterconnected computers.• It is a document-centricconcept not PC centric.
IaaS- Infrastructure as a Service• The IaaS layer extends the virtualization layerby providing the mechanisms to provision andcontrol the virtual machines in a utility computingmanner.• The end user is able to control cost by knowingexactly how much each virtual machine instancecosts per minute/hour.
• Seeks to minimize the hassle and complexityin deploying an application in the cloud.• A programming platform is presented to theend user, typically a developer at this point,which leverages and programming language.PaaS- Platform as a Service
SaaS- Software as a Service• Simple way to get the application functionalityyou need without incurring the cost of developingthat application.• In this layer, even the platform has beenabstracted away from you as an end user.
PRACTICALLY LIMITLESS ANDEASILY ACCESSIBLEIT SAVES THE COST OFINFRASTRUCTURE AND HARDWAREMAINTAINANCEIT PROVIDES THE ACCESS TOCOMMERCIALY AVAILABLEAPPLICATIONS
•Cloud computing is still struggling in its infancy with negative and positiveComments.•Academia is bit slower to react.•Its security deficiencies and benefits need to be carefully weighed beforemaking a decision to implement it..