CLOUD COMPUTING

[seminar class]

Presented by:
RINI ANN VARGHESE

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OVERVIEW
Have a look at what experts say…
A paradigm shift in which computing is moved from personal computers to a ‘cloud’ of computers
Simply a metaphor for the internet
It’s about new IT infrastructure, new business and programming models
Comes into play when affordability and huge infrastructure become a big headache for smaller enterprises
CLOUD COMPUTING
More About Cloud Computing…
A paradigm
Information is permanently stored in servers on the internet
Cached temporarily on clients like desktops, hand-helds, sensors etc.
A style of computing
IT services and resources are provided as a service over the internet
The concept generally incorporates the following:
Software as a Service (SaaS)
Platform as a Service (PaaS)
Infrastructure as a Service (IaaS)
Why Cloud Computing…?
IT Efficiency-
Minimize Costs
Business Agility- Maximize Return
History of Cloud Computing
The underlying concept dates back to 1960’s
“Computation may someday be organized as a public utility ” -John McCarthy
The term ‘Cloud’ into commercial use in the early 1990’s
General Magic launched a short-lived Cloud Computing product in 1995
Salesforce.com was established in 1999 which provided the concept of ‘On Demand’ & Saas
History of CC (Contd…)
In the early 2000’s Microsoft extended this concepts
IBM detailed these concept in 2001
Amazon modernized their datacenters in 2005
In 2007 Google, IBM etc embarked on a large scale CC research project
By mid 2008 CC gained popularity in the mainstream press
Characteristics of CC
Agility
Cost
Device and Location Independence
Multi- Tenancy
Reliability and Self Healing
Scalability
Security
Sustainability
Components of CC
Clients
Services
Application
Platform
Storage
Infrastructure
CC Architecture
Fig: 1 How users connect to the cloud…
CC Architecture (Contd…)
User Interaction Interface:
How users of cloud interface with the cloud
Services catalogue:
Services a user can request
System management:
Manages the resources available
CC Architecture (Contd…)
Provisioning tool: Carves out the systems from the cloud to deliver on the requested service
Monitoring and metering:
Tracks the usage of the cloud (optional)
Servers:
Virtual or physical servers managed by System management
CC Infrastructure Models
Why CC is the Wave of the Future?
Software as a Subscription
Reduced Software Maintenance
Increased Reliability
Increased Scalability
Cost Reduction
Environment Friendly
Matches Current Computing Trends
Portability/ Accessibility
Efficient Use of Computer Resources
Versionless Software
CRITICISM
&
DISADVANTAGES
CC does not allow users to physically possess the storage of their data
CC limits the freedom of users
CC is dependent on internet connection
CC endangers liberties
It would be a challenge for hosting access restricted sites
Some platforms are still in beta
FUTURE OF CLOUD COMPUTING
Trend of large vendors entering CC will accelerate
All major IDEs will provide cloud deployment options
A next- generation of “Middleware for the cloud” will rise in dominance over traditional J2EE Application Servers
System administration & Configuration and Network Management will become a field bursting with innovation
CONCLUSION
This was what the pioneers in the field concluded…
Cloud Computing is the next big wave in computing
A powerful new abstraction for large scale data processing systems
A new emerging architecture which can expand the Internet to become the computing platform of the future