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24 May 2010
Lost in the Fog:Is Cloud Computing the Future
for Digital Information?
Clifton Chan
CROWN COPYRIGHT ©
What is cloud computing?
Undefinition
“The network is the computer”
-- John Gage, Sun Microsystems, 1982
“... computing may someday be organized as a public utility ...”
-- John McCarthy, 1961
Definition
“a computing capability that provides an abstraction between the computing resource and its underlying technical architecture (e.g., servers, storage, networks), enabling convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort or service provider interaction.” -- NIST
Characteristics
On-demand self-service
Broad network access
Resource pooling
Rapid elasticity
Measured service
-- NIST
Services
Software as a Service
Platform as a Service
Infrastructure as a Service
“Stack” of services
Types
Public clouds
Community clouds
Private clouds
Hybrid clouds
Fad or Trend ?
Peak of the Gartner Hype Cycle
i.e. immature
And yet ...
flicker twitter TradeMe GoogleApp Eng
Amazon EC2
On-demand self-service
Broad network access
Resource pooling
Rapid elasticity ?
Measured service Free
Trend
Becoming part of the landscape
Landscape
Mainframes
Mid-range computers
PC‟s
Internet
Cloud
Implications
Implications for government
On-demand self-service
Easy to buy
• T&Cs and costs upfront
• rapid deployment
Easy to sign up and sign off
• Low (un)deployment costs
Anyone can sign up
• Proliferation - new access database
Broad network access
Internet / IP network for access
• Geographic agility
• Wider range of access devices
Internet / Network usage increases
• 24 x 7 access
• Network security
• Network costs will increase
Resource pooling
Multi-tenant: 102s, 103s, 106s
• Potentially more attackers - security
Economies of scale - buying power
• Sustainable professional expertise
• Value for money
Standardised offerings
• Drive standardisation and lower cost
• Less uniqueness
• Who‟s standards?
Rapid elasticity
Provider manages capacity
• Focus on adding value to business
Acquire and use what you need
• No underutilised resources
Measured service
Pay for what you use
• No capital expenditure
• No money sitting around
• Low cost of entry
Cost visibility
• Clear link between use and costs
Paradigm
It is a form of outsourcing.
Why the fuss?
We outsource all sorts of things, e.g.:
• Mainframe: timeshare bureaus
• Payroll bureaus
• Watering plants
• Office cleaning
• Helpdesks
Large body of knowledge on how to make outsourcing work
Fuss:
Biggest providers multi-nationals
• Compatible records and archiving practises
• Records and data in the „cloud‟
Data is likely to be overseas
• Outside NZ jurisdiction
• Data persistence
Summary
Utility computing on the network
Becoming part of the landscape
Form of outsourcing
Questions
CROWN COPYRIGHT ©