Support presentation for a Workshop on Cloud computing for engineering graduates which focuses on providing basic understanding of virtualisation and cloud computing concepts.

1. CLOUD COMPUTING
OVERVIEW AND DEMO
RAJMOHAN KATHIRESAN

2. WHAT IS COMPUTING ?
• Computing is a process where a combination of hardware and software resources
are used to solve a problem
• A Problem can either be a large complex one or combination of simpler problems
• Computing can be done in a serial or parallel manner
• Performance of computing is highly dependent on the Infrastructure, Platform
and Software which runs that
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3. WHAT IS CLOUD COMPUTING
• Cloud computing is a way of solving problems of any complexity using an existing
infrastructure/platform software which resides in a centralized location but still
accessible through the internet across the globe
• Ability to run on latest hardware, software platform without high additional
investment costs
• It provides a centralized way to monitor, manage and troubleshoot resources on
the go
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4. ON-PREMISE VS CLOUD
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5. WHY CLOUD ?
• Safe, Secure and High Availability
• Latest hardware infrastructure can be utilized ’On Demand’
• No need of periodic repair or maintenance/upgradation of hardware resources
• Wide availability of platform and easy to maintain licensing model
• Easily scale-up/scale-down resource based on the need
• Secured remote management and highly flexible access policies for resource level
restriction
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6. VIRTUALIZATION
• Concept of creating a virtual entity of a resource for the purpose of reusability
and sharing
• Virtualized resource uses the computing power of host resources but still runs in
isolation. Virtualized resources can be allocated and de-allocated in real time
• Virtualization forms the base of cloud computing, where a single hardware source
can be utilized by multiple consumers for different needs
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7. AS A SERVICE
• IaaS
• Hardware resources such as Processor, RAM and storage can be utilized (kind of
rented) instead of actually owning them as physical assets
• PaaS
• Operating system, frameworks required for a computation can be utilized instead of
managing the infrastructure and licensing cost
• SaaS
• Solve your problem by subscribing to a service instead of managing the
infrastructure/platform required for that.
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8. INFRASTRUCTURE AS A SERVICE
• RAM, Processing Unit and Storage as a service
• It is similar to renting out a system
• Software and licenses will need to be managed by us
• Hardware will be maintained by the cloud provider
• Usage : Configure a VM and install any OS of choice
for any kind of computation
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9. PLATFORM AS A SERVICE
• Software licenses and versioning will be taken
care by the provider in addition to hardware
• Usage : No need install any OS or software to
run a application. Everything will be readily
available along with the hardware.
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10. SOFTWARE AS A SERVICE
• Every aspect of computation is managed by the provider (Hardware, Software,
Platform, licensing etc..)
• Application available over the cloud accessible from anywhere in the world
• Applications can be used without installing locally in the machine
• E.g GMail, Calendar, Facebook
• E.g Word document can be editing without even having Microsoft windows
installed in the machine locally
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11. MAJOR CLOUD PROVIDERS
• Amazon AWS
• Microsoft Azure
• IBM Cloud
• Google Compute Engine
• And may more ..
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12. DEMO
• Local VM Provisioning & Monitoring
• Cloud VM in Google Compute Engine
• Simple calculator web service in Google App Engine
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13. LET’S COLLABORATE
• rajmohankathiresan@gmail.com (Subject : Cloud Workshop – Date)
• https://twitter.com/RajmohanKathire
• https://medium.com/@rajmohankathiresan
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14. DISCLAIMER
• Slides, material and discussion are solely owned by me and doesn’t reflect
thoughts/process of the employer
• Trial accounts of Amazon AWS/Google cloud engine has been used which comes with
certain limitation. Please ensure to deallocate resources once done with the
experimentation
• Neither the workshop nor its content are sponsored. It is highly intended for open
educational purposes
• Workshop provides a high level overview of the topic and it cannot be considered as
the sole point of reference
• Refer prescribed study material for scope of examination
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