emerging trends (1)
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Prof. Kavitha Ranganathan
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HYPE CYCLE
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What has been said of Cloud
Computing . Something that will "Profoundly change the way
people work and companies operate." (The Economist)
"Industry-speak for just about anything tangentiallyrelated to the Internet".
Weve redefined cloud computing to includeeverything that we already do. I cant think of anythingthat isnt cloud computing with all of theseannouncements. (Larry Ellison, Oracle)
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What is Cloud Computing?
Multiple Choice: Cloud Computing isa)A way to access applications hosted on the web through
your web browser (Software as a Service -- SaaS)b)A pay-as-you-go model for IT resources accessed over the
Internet (Platform as a Service PaaS)c) Use of commodity computers, distributed throughout an
internet, to perform parallel processing, distributedstorage, indexing and mining of data
d)Gartner: Cloud computing is a style of computing where
massively scalable IT-related capabilities are provided as aservice across the Internet to multiple externalcustomers
e)An IT buzzword that assures potential clients that yourproduct is on the cutting edge of technology
f)All of the above
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ElasticityAdd or remove resources at fine grain(one server at a
time with EC2)
Can be added or removed within minutes Closer matching of resources to workload
Real world server utilization in data centers 5 20 %
Peak exceeds average by 2-10%
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Cost per user per month On-premise Cloud-based
MicrosoftExchange
OnlineGoogleApps*
Subscription $0.00 $9.78 $8.66 $4.17
Server hardware and OS $0.56 $0.00 $0.00 $0.00
Server software $3.61 $0.00 $0.00 $0.00
Client software $3.49 $3.49 $3.49 $0.00
Storage $1.23 $0.00 $0.00 $0.00
Message filtering $2.99 $1.86 $0.00 $0.00
Message archiving $8.89 $8.11 $6.33 $3.75
Staffing $4.41 $1.85 $1.85 $0.55
Total $25.18 $25.08 $20.32 $8.47
*Google doesnt currently offer an offline email client. Note: The pricing and features available in each architecture vary by provider. This is a scenario for 15,000employees with email.
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Cost per user per month 5,000 seats15,000
seats25,000
seats35,000
seats45,000
seats55,000
seats
On-premise email $28.22 $25.18 $22.52 $20.11 $17.84 $16.59
Cloud-based email $27.24 $25.08 $23.05 $21.09 $19.18 $18.18
Microsoft ExchangeOnline Standard $21.55 $20.32 $19.22 $18.19 $17.21 $16.68
Google Apps* $8.59 $8.47 $8.39 $8.32 $8.28 $8.24
*Google doesnt currently offer an offline email client.Note: The pricing and features available in each architecture vary by provider.
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