The document discusses the impact of cloud computing on enterprise architecture (EA), emphasizing its characteristics such as scalability, self-service, and governance. It analyzes when cloud computing is a suitable fit for organizations, considering factors like independence of processes and applications, and highlights the potential costs associated with cloud services compared to in-house solutions. Additionally, it identifies misconceptions and criteria to differentiate genuine cloud services from traditional technologies rebranded as cloud computing.

1. <Insert Picture Here>
Impact of the rise of the Cloud on Enterprise
Architecture
Tim Rubin
Enterprise Architect

2. Impact of the Cloud on EA
Agenda
• What is Cloud Computing?
• Why should Enterprise Architecture care?
Open Space Workshop

3. Cloud Computing
*
Often characterized by:
• Virtualized computing resources • Multi-tenancy
• Seemingly limitless capacity/scalability • Self-service
• Dynamic provisioning • Pay-for-use pricing
* Source: Wikipedia.org

4. Qualities of an Enterprise Cloud
• On-Demand, Services-Oriented Computing
• Drastically reduced lead times
• Demand trends are predicted by the provider
• Variable cost consumption
• Pay-per-use or over time; decouple fixed overhead from demand
• Self-service
• Resources directly/indirectly reserved with a GUI or API
• Elastic Scalability
• Grow or shrink resources as required
• Mandatory Network
• The network is essential to consume the service
• Governance and Compliance
• Tracking and matching of cloud providers to policies

5. When Cloud Computing may be a fit
• When the processes, applications, and data are largely
independent.
• When the points of integration are well defined.
• When a lower level of security will work just fine.
• When the core internal enterprise architecture is healthy.
• When the Web is the desired platform.
• When cost is an issue … when isn’t it though!
• When the applications are new.

6. What do we mean by... architecture?
Architecture
• The fundamental organisation of a system, embodied in
its components, their relationships to each other, and the
environment, and the principles governing its design and
evolution.
(ISO 42010 / IEEE 1471-2000 definition)
Enterprise Architecture
• Enterprise Architecture is the organising logic for
businesses and their IT infrastructure reflecting the
integration and standardisation requirements of the firm’s
operating model.
Peter Weill, MIT

7. Architecture as Strategy
Strategy Idea 1 Idea 2 Idea 3
Defines Limits Constrains Set Policy
Learning
Enterprise
Operating Model
Architecture
Provides Capabilities Requires
Execution Systems Processes Infrastructure
Adapted from: Enterprise Architecture as Strategy: Creating a Foundation for Business Execution, J. Ross, P. Weill, and D. Robertson, Harvard Business School Press, 2006.

8. Is the Business Case for Cloud open
and shut?
“Cloud computing, far from saving IT organizations money,
actually costs more than providing the same services in-house.”
http://www.cio.com/article/480595/The_Case_Against_Cloud_Computing_Part_Four

9. Is the Business Case for Cloud open
and shut?
Data Center Economics Cloud Economics (Amazon EC2)
Windows Large instance
•15 GB memory 8 EC2 Compute Units (4 virtual
cores with 2 EC2 Compute Units each)
Outsource Cost: • 1,690 GB instance storage, 64-bit platform
±$10,000/annum (4 by 420 GB plus 10 GB root partition)
• Windows Server 2003, Microsoft Authentication
Services, and SQL Server
Costs $3.20/hr or $2,304/month or $27,000/annum
Windows small instance
• 1.7 GB of memory, 1 EC2 Compute Unit
(1 virtual core with 1 EC2 Compute Unit)
• 160 GB of instance storage, 32-bit platform
Costs $.125/hr, $90/month for Windows.
http://www.cio.com/article/480595/The_Case_Against_Cloud_Computing_Part_Four

10. Is Cloud Computing not just “old”
technology re-branded?

11. Is Cloud Computing not just “old”
technology re-branded?

12. Does IT Matter?

13. 15 Ways to Tell Its Not Cloud Computing
• If you peel back the label and its says “Grid” or “OGSA” underneath… it is not a cloud.
• If you need to send a 40 page requirements document to the vendor … it is not cloud.
• If you can’t buy it on your personal credit card… it is not a cloud
• If they are trying to sell you hardware… it is not a cloud.
• If there is no API… it is not a cloud.
• If you need to re-architect your systems for it… It is not a cloud.
• If it takes more than ten minutes to provision… it is not a cloud.
• If you can’t de-provision in less than ten minutes… it is not a cloud.
• If you know where the machines are… it is not a cloud.
• If there is a consultant in the room… it is not a cloud.
• If you need to specify the number of machines you want upfront… it is not a cloud.
• If it only runs one operating system… it is not a cloud.
• If you can’t connect to it from your own machine… it is not a cloud.
• If you need to install software to use it… it is not a cloud.
• If you own all the hardware… it is not a cloud.
• If it takes 20 slides to explain…. It is not a cloud
Courtesy James Governor’s Monkchips Blog: http://www.redmonk.com/jgovernor/

14. 15 Ways to Tell Its Not Cloud Computing
• If you peel back the label and its says “Grid” or “OGSA” underneath… it is not a cloud.
• If you need to send a 40 page requirements document to the vendor … it is not cloud.
• If you can’t buy it on your personal credit card… it is not a cloud
• If they are trying to sell you hardware… it is not a cloud.
• If there is no API… it is not a cloud.
• If you need to re-architect your systems for it… It is not a cloud.
• If it takes more than ten minutes to provision… it is not a cloud.
• If you can’t de-provision in less than ten minutes… it is not a cloud.
• If you know where the machines are… it is not a cloud.
• If there is a consultant in the room… it is not a cloud.
• If you need to specify the number of machines you want upfront… it is not a cloud.
• If it only runs one operating system… it is not a cloud.
• If you can’t connect to it from your own machine… it is not a cloud.
• If you need to install software to use it… it is not a cloud.
• If you own all the hardware… it is not a cloud.
• If it takes 20 slides to explain…. It is not a cloud
Courtesy James Governor’s Monkchips Blog: http://www.redmonk.com/jgovernor/

15. Open Space Workshop
The Laws of Open Space
• Respect for others
• Whoever comes is the right people
• Whatever happens is the only thing that could have
• Whenever it starts is the right time
• When it's over it's over
• The law of two feet

16. Impact of the Cloud on EA
Agenda
• What is Cloud Computing?
• Why should Enterprise Architecture care?
Open Space Workshop:
• Is the business case for Cloud Computing open & shut?
• Is Cloud Computing not merely an opportunity for vendors
to rebrand “old” technologies?
• 2005 Revisited!!
• Does IT Matter? And, if it does, for how long?

17. Tim Rubin
tim.rubin@oracle.com

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