Cloud computing allows users to run web applications on large providers' infrastructure instead of their own servers. Google App Engine is one such platform that is free up to a certain level of usage. It initially only supported Python but now also supports Java. Users can deploy standard Java web applications to Google App Engine, which will handle the infrastructure. This provides scalability without upfront costs.

1. Cloud Computing
Cloud
Computing
Presented by:
Jazia JABALLAH
L/O/G/O
Zeineb YAHYAOUI
www.themegallery.com
Academic Year: 2009/2010 1

2. DB Server EMail
Web Server App Server
Linux Windows
Windows Linux
MySQL Exchange
IIS Glassfish
significant infrastructure costs
Facebook spent $68 million on their servers in 2007 [1] 2

3. Web Server
“Don't put
all your
eggs in one
basket”
DB Server Virtualization App Server
Email Server
Memory capacity and
processor calculations
3

4. 1 Introduction
2 What’s Cloud?
3 Inside the Cloud
4 Types of Cloud Computing
5 Advantages and Disadvantages
6 Case Study: Google App Engine
7 Conclusion 4

5. Main Frame
Client/Server 1970’s
1980’s
Web
Cloud Computing
1990’s (2010+)
2000’s
SOA
5

6. Cloud Computing
The “Cloud” is the default The broader term of “Computing”
symbol of the internet in encompasses:
diagrams. - Computation
- Coordination logic
- Storage
Cloud Computing is about moving
computing from the single desktop
pc/data centers to the internet.
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7. Application (Software) SaaS
Platform PaaS
Infrastructure IaaS
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8. Software as a
Service (SaaS)
Corporate Email
CRM, ERP, HR
Business Processes
The Cloud Platform
Platform as a
Service (PaaS)
Java Runtime
Web 2.0 Runtime
LAMP / WAMP
Software Platform
Infrastructure as a
Service (IaaS)
Virtual Servers
Virtual Storage
Network Routers
Virtualized CPUs and Storage
Physical Servers
8
Physical Servers across the Globe

9. Enabler Providers Consumers
IaaS PaaS SaaS
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10. 10

11. 11

12. eliminates the establishment of physical
infrastructure
12

13. Ease of Use:
• Deploy infrastructure with a mouse
• No cabling
• Middle of the night
• Do it yourself remotely from anywhere
anytime
13

14. Scalability
• Control your infrastructure with your app
• Nothing to purchase and take delivery on
• Instant
14

15. Risk
• Nothing to buy
• Cancel immediately
• Change instantly, even operating systems
• Throw it out
• Rebuild it instantly after testing
RISK
15

16. Reliability
• Based on enterprise grade hardware
• Designed for failures:
– Automatically spin up replacements
– Use multiple clouds
16

17. Cost
• “Turn off the lights” = turn off servers you aren’t
using
– Ex: Turn off development and test
environments
• Pay for only what you use
• No need to buy in advance
• Zero Capital Outlay
• No contracts
17

18. FACILITATES COLLABORATIONS
ALL TIME DATA AVAILABILITY
UNLIMITED STORAGE
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19. TOTALLY INTERNET CONNECTION
ORIENTED
REQUIRE HIGH BANDWIDTH OF
NET CONNECTION
DENIAL OF SERVICE ATTACKS
AGAINST THE SERVICE PROVIDER.
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20. SECURITY (DATA TRANSPARENCY)
20

21. 1 2 3
It allows people Write a web Google App
Engine is free up
to run their web program in
to a certain level
application on Python or in of used resources.
Google's Java and
infrastructure. submit to
Google. It will
take care of the rest
21

22. Cloud computing – Only PaaS & SaaS, No IaaS
Initially started with Python Runtime
Recently added support for Java
Can deploy standard J2EE WAR Files
Requires a special deployment descriptor
Provides simple storage as integrated feature
Storage supports GQL – Google Query Language
22

23. • Download Google App Engine SDK for Java:
appengine-java-sdk-1.3.3.1.zip
• Download the Google Plugin for Eclipse:
http://dl.google.com/eclipse/plugin/3.4
Demo
23

24.  HAS GOOD HARDWARE
MANAGEMENT
 SECURITY IS ADVANTAGE AS
WELL AS THREAT
 MADE BUSINESS LIFE EASY
 HOWEVER NOT AVAILABLE TO
ALL
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25. USE OF IT DEPEND ON THE TYPE OF
BUSINESS IS DONE
FLEXIBLE IN TERMS OF DATA
AVAILABILITY AND RESOURCE
USABILITY
HUGE DATA AVAILABILITY BUT
MAINTENANCE IS A CHALLENGE
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26. There are a lot of criticisms
about the security in cloud
computing.
Some have said stored
information in the cloud is
safer than on premise, but
others disagree.
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27. L/O/G/O
www.themegallery.com
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