COMP 2903 A34 –Cloud Computing Danny Silver JSOCS, Acadia University

Brian Hayes Communications of the ACM, July, 2008 Lives in Durham, NC Senior Writer for American Scientist "Computing Science" column since he was an editor of Scientific American to he was the editor of American Scientist.

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

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

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

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 3 rd party Why?? End User Perspective – User control takes time and energy – Means extra knowledge and work – Often not core competency

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

Possible Future Directions Wordstar for the Web – Google Docs, Buzzword, Photoshop Express Enterprise computing in the cloud – On demand CRM - Salesforce.comSalesforce.com Cloudy infrastructure – Amazon Web Services – IBM Blue Cloud – Google – Rackspace

The Cloud Op. Sys. The operating system is inside your browser – EyeOS AIR – Adobe Systems replaces or bypasses the browser

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

Cloud Computing and Society What new challenges does cloud computing bring The Communicators: The Future of Cloud Computing uwVys uwVys