• E.g.: Flickr, Salesforce.com, Cisco WebEx office, Gmail, IBM
PaaS Virtual Development-platform-as-a-service Database App Servicer Reduce cost of buying & managing S/w & H/w Example : Google App Engine, Microsoft SQL Server Data Services, Engine Yard, Salesforce.com’s Force.com
IaaS Backbone of Entire system Physical storage space Processing capabilities Systems Management E.g.: Akamai, Amazon EC2, CohesiveFT, Mosso, Joyent Accelerators
Benefits They own the hardware Affordability They maintain the system They train and support users
Benefits Third-Party Management The user provides space, power, and bandwidth. And they take care of the rest!
Limitations Your data is not directly in your hands, but in the hands of a third party. Total Dependence on the Internet Connection. If your cloud Host disappears, where does your information go?
Cloud Challenges Trust, Privacy and Availability Performance, Ownership & Cost Savings Creation and adoption of new software development processes and training Security, Legal and Regulatory issues