This document discusses the history and evolution of cloud computing. It begins with a brief overview of mainframes and their limitations. Next, it defines cloud computing as delivering computing resources as a utility over the network. The document then covers the characteristics of cloud computing and different cloud service models including Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). It provides examples of popular cloud platforms and services. The document discusses advantages of cloud computing like scalability and lower costs but also potential threats involving data security, availability, and compliance issues.

1. By: Saurav Mawandia
Thejas Kumar G

2. CLOUD COMPUTING
Old days of computing
What’s cloud computing?
SaaS
IaaS
PaaS
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3. OLD DAYS
When real men used to
write their own device
drivers
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4. MAINFRAMES
The term originally referred to the large cabinets that
housed the central processing unit (CPU)
Later, the term was used to distinguish high-end
commercial machines from less powerful units
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5. MAINFRAMES
The Good
Powerful computers
Zero downtime
RAS (Reliability,
Availability,
Serviceability)
The Bad
Very expensive
Not efficient
Not customizable
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6. Phases

7. WHAT IS
CLOUD?
Cloud computing, I mean.
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8. CLOUD COMPUTING
“Cloud computing is a model for enabling
convenient, on-demand network access to a shared
pool of configurable computing resources that can be
rapidly provisioned and released with minimal
management effort or service provider interaction”
--NIST
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9. CLOUD COMPUTING
-
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In simple words, Cloud computing is delivering of computing as a service rather than a product where
we can share resources like software, platforms,
infrastructures, etc as a utility.
In simple words, Cloud computing is delivering of
computing as a service rather than a product
where we can share resources like software,
platforms, infrastructures, etc as a utility.

11. CHARACTERISTICS
Agility
API (REST-based)
Cost (barrier to entry)
Location independence
Multi-tenancy
Reliability
Scalability
Security
Maintenance
Metering
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12. PRIVATE CLOUD
Allows you to overflow load to public clouds
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13. FLAVORS (services)
PaaS (Platform as a Service)
IaaS (Infrastructure as a Service)
SaaS (Software as a Service)
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14. PLATFORM AS A SERVICE
PaaS is the delivery of a computing platform and
solution stack as a service.
PaaS offerings may include facilities for application
design, application development, testing,
deployment and hosting.
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15. INFRASTRUCTURE AS A
SERVICE
Platform virtualization environment -- as a service.
Rather than purchasing servers, datacentre
space or network equipment, clients instead buy
those resources as a fully outsourced service.
Several market leaders at the moment
Amazon EC2
Rackspace
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16. SOFTWARE AS A SERVICE
Software on demand: you are not buying the
software, you are buying a service
Pay-as-you-go business model
No local server installation
Rapid scalability
Think of using GMail instead of installing Microsoft
Exchange
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17. EXAMPLES
Google AppEngine (Python, Java)
Heroku (Ruby on Rails)
Amazon Beanstalk (Java)
Salesforce.com
Windows Azure (.NET, Java, PHP, Ruby)
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18. DEMO
Cloudo.com

19. ADVANTAGES
Pay per use
y per use
Instant Scalability
Reliability
Lower cost of ownership
Reduce infrastructure
management responsibility

20. Threats
No Physical access to servers
y per use
Giving all the private data to a third party
Availability of data
Abuse of trust
Legal and compliance issues

21. THREAT
1) Data Loss/Leakage 28.8%
2) Abuse and Nefarious use of Cloud Computing 17.8%
3) Insecure API’s 15.1%
4) Malicious Insiders 11.0%
5) Account/Service and Traffic Hijacking 9.6%
6) Unknown Risk Profile 9.6%
7) Shared Technology Vulnerabilities 8.2%
Top Ranked Threats
Survey Results by CSA

23. THANK YOU