Cloud Computing Cory Willing Computer Science University of Wisconsin-Platteville November 24, 2009

Explanation of Technology Usage-based computing Term refers to “cloud” concept of Internet Data and software stored on remote server Accessed via web browser or other system on client's computer Each server holds multiple virtual machines for different software User is charged for access to software and data

Explanation of Technology (cont.) Figure 1: Search trends of Google for 2008, with Cloud Computing outpacing Grid Computing Differences from Grid Computing Grid computing uses power of distributed PCs to achieve a common goal Cloud computing uses server to provide for thousands of clients

Hurdles in Development How long will data be maintained? How can customers be insured against service outages or data loss? How will users switch data from one provider to another? How will providers handle hosting proprietary software?

Hurdles (cont.) - Security Internet is not a safe medium as of right now Cloud computing may not be an option for hospitals, government institutions, etc. Possible solutions:  Encode information before sending it across cloud (SSL/TLS)  Private cloud for large companies: provider and client protected by firewall

Major Players Google Google Docs AppEngine  Used to create web applications to be used in cloud computing  Scales easily, but does not allow programmer much freedom

Major Players (cont.) Microsoft Azure  Programmers can choose almost any language  Most applications supported  Scales somewhat easily  Programmer enjoys modest amount of freedom

Major Players (cont.) Amazon Elastic Compute Cloud  Programmers have control of almost entire system  Supports virtually every language  Treats each VM as though it were an independent machine  Major issues with scalability

Future Up-to-date software: Client does not need to find patches for programs Truly portable access points:  Laptops, cell phones, Blackberries, etc. Small businesses will have access to IT benefits previously enjoyed only by large corporations

Future (cont.) - Brokers Brokers buy large shares of computing power from multiple providers When a client needs quick, temporary access to a program, she goes to the online marketplace Brokers try to outbid each other for contracts with providers  At the same time, brokers must provide users with lowest-cost service

Future – Brokers (cont.) Figure 2: Brokers vie for customers in an online marketplace for computing resources

Conclusion Cloud computing is in its infancy Many hurdles to overcome Which industry giant will lead? Will there be one leading company? Set to be the next revolution in computing

References Armbrust, Michael; Fox, Armando; Griffith, Rean, et al. “ Above the Clouds: A Berkeley View of Cloud Computing.” UC Berkeley Reliable Adaptive Distributed Systems Laboratory, February 10, Internet. Beverly, Robert. "GETTING CLOUDY: Computing power, boiler strategies, and R- 22 dominate the horizon." Engineered Systems26.10 (2009): 8. Academic Search Premier. EBSCO. Web. 2 Nov Buck, Stephanie. "Libraries in the Cloud: Making a Case for Google and Amazon." Computers in Libraries 29.8 (2009): 6-10.Academic Search Premier. EBSCO. Web. 2 Nov Buyyal, Rajkumar; Yeo, Chee Shin; Venugopal, Srikumar. “Market-Oriented Cloud Computing: Vision, Hype, and Reality for Delivering IT Services as Computing Utilities.” Department of Computer Science and Software Engineering, University of Melbourne, Australia. September 25, 2008.

References (cont.) Carr, Nicholas. The Big Switch. New York: Houghton Mifflin Company, Print. "Clash of the clouds." Economist (2009): Academic Search Premier. EBSCO. Web. 2 Nov Delic, Kemal A; Walker, Martin Anthony. “Emergence of the Academic Computing Clouds.” ACM Ubiquity (2008). Internet. Hayes, Brian. “Cloud Computing.” Communications of the ACM (2008): Internet. Rash, Wayne. "Is cloud computing secure? Prove it." eWeek (2009): Academic Search Premier. EBSCO. Web. 2 Nov "REPORT: CLOUD COMPUTING AT PEAK OF 'HYPE CYCLE'." Industry Week/IW (2009): 42. Academic Search Premier. EBSCO. Web. 2 Nov

References (cont.) Sinclair, Ken. "THE CLOUD BEYOND THE NETWORK." Engineered Systems (2009): Academic Search Premier. EBSCO. Web. 2 Nov Truitt, Marc. "Editorial: Computing in the "Cloud." Information Technology & Libraries Sept. 2009: Academic Search Premier. EBSCO. Web. 2 Nov