COMP 2903 A34 –Cloud Computing Danny Silver JSOCS, Acadia University.
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Transcript of COMP 2903 A34 –Cloud Computing Danny Silver JSOCS, Acadia University.
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COMP 2903A34 –Cloud Computing
Danny SilverJSOCS, Acadia University
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Brian HayesCommunications of the ACM, July, 2008
• Lives in Durham, NC• Senior Writer for American Scientist• "Computing Science" column since 1993• 1972- 1984 he was an editor of Scientific American• 1990- 1992 to he was the editor of American Scientist.
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What is Cloud Computing?
• Also referred to as:– On-demand computing– Software as a service or utility– Internet as platform
• Data existing and programs running on unseen computers, scatter across continents
• Eg. – Google Docs • Cloud Computing Explained
http://www.youtube.com/watch?v=QJncFirhjPg
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From Shrink-wrap to Cloud S/W
• The Shift is well underway• Shrink-wrap and downloaded software have
lost dominance … but …• Migration from laptop and local datacenter is
underway• A second coming – 50 years ago there were
similar service bureaus, time-sharing systems
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History Lesson
• PC arrival in 1980s – meant liberation from the central computer service
• Individuals were free to control their own s/w and data
• But no person is an island – sneaker net, then LANs
• Conflicts with the mainframe datacentre people
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Back to the Future – With a Twist
• Users and IT managers used to argue about control over data and software
• Now willing to surrender control to a 3rd party• Why??• End User Perspective– User control takes time and energy– Means extra knowledge and work– Often not core competency
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Back to the Future – With a Twist
• Corporate Perspective– Maintaining systems on every desk is pricy– Maintaining data centers costs even more– Often not core competency– Outsourcing is just good busines
• S/W Vendor Perspective– Software maintenance on various platforms major
challenge – bugs, fixes, distribution– Single platform s/w solutions better, cheaper
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Possible Future Directions
• Wordstar for the Web – Google Docs, Buzzword, Photoshop Express
• Enterprise computing in the cloud– On demand CRM - Salesforce.com
• Cloudy infrastructure– Amazon Web Services– IBM Blue Cloud– Google– Rackspace
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The Cloud Op. Sys.
• The operating system is inside your browser– EyeOS
• AIR – Adobe Systems replaces or bypasses the browser
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Major Challenges for the Cloud
• Scalability, ebb and flow• HCI – mimicking or better the current desktop• Migration from multiple langauges and Oses• Politics of a declining IT department• Impact on shrink-wrap market• Privacy, security, reliability
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Cloud Computing and Society
• What new challenges does cloud computing bring
• The Communicators: The Future of Cloud Computinghttp://www.youtube.com/watch?v=gh2YV-uwVys