2. Features
An assemblage of computers and servers
accessed via the Internet
Access all your applications and
documents from anywhere in the world
Easier for group members in different
locations to collaborate
Multi-tenancy
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3. Cloud Service Development
Software as a Service
Platform as a Service
Infrastructure as a Service
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4. Software as a Service
Accessible from anywhere with an internet
connection
Pay per use or subscription based payment
methods
System maintenance (backup, updates,
security, etc) included in service
Centralized feature updating
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6. Infrastructure as a Service
Automation of administrative tasks
Supports operations, including storage,
hardware, servers and networking components
Sometimes, IaaS is referred as Hardware as a
Service
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8. Limitations
Requires constant Internet connection
Can be slow
Features might be limited
Data Insecurity
If Cloud loses data, everything is lost
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10. The Present and The Future
Google Apps
Salesforce.com
SalesForce.Com
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11. References
[1] Michael Miller, Cloud Computing - Web-Based Applications That Change the Way
You Work and Collaborate Online, Published by Que, 2008
[2] Ramkumar Dharga., White Paper on Cloud Computing, Key Considerations for
Adoption, Infosys on April 2009.
[3] Glenn Gruber, Article on Understanding SaaS and the Cloud in Travel Tech, on
September 28,2010. Available at http://www.tnooz.com/2010/09/28/how-to/part-one-
of-two-understanding-saas-and-the-cloud-in-travel-tech/
[4] Cloud Computing. Available at http://milinic.blogspot.com/2010/10/cloud-
computing.html
[5] Infrastructure as a Service. Available at
http://searchcloudcomputing.techtarget.com/definition/Infrastructure-as-a-Service-IaaS
[6] Platform as a Service. Available at
http://en.wikipedia.org/wiki/Platform_as_a_Service
[7] Cloud Software: The evolution of Cloud Computing. Available at
http://www.mindtouch.com/blog/2008/04/11/google-app-engine-the-missing-piece-of-
the-cloud-software-revolution/
[8] Software as a Service. Available at
Sunday,http://www.cloudtweaks.com/2010/08/advantages-of-saas-software-as-a-service/
April 10, 2011
