1. Gist of Cloud..
Dinesh Varadharajan
@gvdinesh
Director Engineering
OrangeScape Technologies

2. Google Moderator questions..
3. What is cloud computing?
According to Gartner cloud computing is a style of computing where massively scalable IT-related capabilities are provided as a service across the Internet to multiple external customers.
4. Cloud as cloudy as it gets
5. Why Cloud? Why in India?
Concept: MWD Advisors
6. Where do I start?
Depends on what you want..
Already developed an application. Want to move to cloud.
Have a business idea to develop web-scale business application.
Need a business solution. Dont want to own it.
7. IaaS, PaaS & SaaS
$21b by 2012 @ 20%
Cloud Apps: Application delivered to the end users on a pay-by-use model. e.g: Salesforce.com, SuccessFactors
Cloud Middleware: Simplifies SaaS development, accelerates time to market & ALM eg: OrangeScape, force.com, many others
$9b by 2012 @160%
Cloud OS: Defines an auto scaling architecture over IaaS. e.g: Google GAE,Microsoft Azure
$4b by 2012 @ 60%
Cloud Infra: Infrastructure on demand - makes pay-by-use feasible. e.g: Amazon EC2, GoGrid, NetMagic
Source: AMR, Gartner, IDC, William Blair & Co
8. Source: Forrester Research
Cloud Taxonomy
9. Options for development
IaaS
SaaS
PaaS
Google app engine, OrangeScape, Force.com
AWS, Rackspace
SalesForce, SugarCRM,Gmail
10. Cloud wash your applications.
Unfortunately will not work.
Traditional applications will not scale exponentially unless designed correctly.
No secret sauce for migration.
11. Basic features of cloud applications.
Statelessness
No node is special.
Neo, The one kill scalability.
Idempotency
The same request can be processed again and again without altering the state of the system.
NoSQL
Horizontal scaling at datastore level.
12. Cloud isnt all rosy?