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1.
Cloud Computing
Aleš Červenka and Pavel Šmerk

2.
What is it?
• computing without any special hardware or
software
• software as well as hardware are somewhere in the
Internet
• on the “client” side, all you need is any device with
decent Internet connection, i.e. PC, laptop, mobile
phone, ...
• according to some people it is only a buzzword
that repackages grid­ and utility­computing

3.
Why the CLOUD?
● the cloud is a metaphor for
the Internet
● it is derived from its
common depiction in
network diagrams as a
cloud outline.

4.
What makes up a cloud?
• a pool of highly scalable,
abstracted infrastructure,
capable of hosting customer
applications
• dynamic allocation, scaling,
movement of applications

5.
Characteristics
• you pay for use
• it is completely OS independent
• you need not to own and maintain your own server
infrastructure or other special hardware
• you need not even to install any software — you
use your web browser to access services

6.
Advantages
• saves cost, economy of scale
• highly scalable
• speeds innovation
• easy to deploy new services for a global market

7.
Disadvantages
• you are not in full control of your data
• you must be online to use it
• you depend on your provider
• selling globally means obeying a host of local and
international regulations
– data privacy, censorship, human rights

8.
Security
• you trust your bank that your money is safe
• you trust your ISP that they do not spy on you
• you might also trust your CC services provider that
your data is safe and they do not spy on you

9.
Top Providers I.
● HaaS: Hardware as a Service
● Amazon: Elastic Compute Cloud (Amazon EC2)
● Google: App Engine
● Akamai
● IBM

10.
Top Providers II.
● SaaS: Software as a Service
● Google: Gmail, Docs
● Yahoo!: Flickr
● Zoho
● Salesforce
● Clarizen

11.
References I.
● http://en.wikipedia.org/wiki/Cloud_computing
● http://searchenterprisedesktop.techtarget.com/sDefinition/0,,sid192_gci1287881,00.htm
#
● http://news.bbc.co.uk/2/hi/technology/7693993.stm
● http://news.bbc.co.uk/2/hi/technology/7695624.stm
● http://www.youtube.com/watch?v=6PNuQHUiV3Q
● http://www.youtube.com/watch?v=hplXnFUlPmg&feature=related
● http://www.youtube.com/watch?v=7BAXvFdMBWw&feature=related
● http://www.slideshare.net/guestc2f801/cloud­computing­in­the­enterprise

12.
References II.
● http://code.google.com/appengine/
● http://aws.amazon.com/