Ist Cloud Computing für Sie sinnvoll? Sollten Sie auf Platform-as-a-Service bei Ihrer Softwareentwicklung setzen? Entsteht durch Cloud Computing für Ihr Unternehmen ein Mehrwert? Beim Einsatz einer Cloud-Plattform, wie z.B. Windows Azure, können sich Vorteile für Ihre Softwareentwicklung und Ihr Unternehmen ergeben. Es gibt verschiedene Einsatzszenarien, in denen Cloud Computing besonders geeignet ist. Die Wahl des Abstraktionsniveaus (SaaS, PaaS, IaaS) in Verbindung mit den richtigen Designentscheidungen sind richtungsweisend. Die Projekte time cockpit und TFM stellen exemplarisch die Unterschiede im Softwareentwicklungs- und Betriebsprozess bei SaaS Lösungen in der Cloud im Vergleich zur klassischen Softwareentwicklung für den Vorortbetrieb dar. Die beiden Produkte waren zwei der ersten Lösungen aus dem deutschsprachigen Raum, die von Grund auf für SaaS und Cloud konzipiert wurden.

1. Cloud Computing
- was bringt‘s?
Thomas Rümmler
AIT GmbH & Co. KG, Stuttgart
Rainer Stropek
time cockpit, Linz, Österreich
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2. Auftragsentwicklung Software-Engineering- Team Foundation Server Neue Chancen durch
Managed Nearshore und Architektur-Coaching Visual Studio Consulting Cloud Computing
» Mehr Informationen » Mehr Informationen » Mehr Informationen » Mehr Informationen
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3. Agenda
Introduction Differentiation
Motivation Cloud vs. Hosting
Cloud Basics Architecture
Added Value
1 2
Business Models Conclusion
... Further topics
Outlook
3 4
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4. Introduction
Motivation
Cloud Basics
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5. Buzzword Cloud
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6. Buzzword Cloud
 Just a buzzword???
 Popular IT trend for the last years
 (see analysis from
Gartner, Forrester, PAC, IDC, Experton Group)
 Industrialization of IT (Dueck, Gunther)
 „Cloud Computing is like water or electricity. It is
always on when you need it, and you pay only for
what you use.“
(Krishnan, 2010, p. 7)
 ‘[…] same impact on software that foundries have
had on the hardware industry.’ (Armbrust et
al., 2009, S. 2–3)
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7. Gartner IDC PAC Experton Group Forrester
Media Tables Marktwachstum mit Anwendungsmoder- Traditionelle Clients Elastische App-
Elastische App-
Risiken nisierung Plattformen
Plattformen
Mobile-zentrierte Kampf der Anbieter Business Intelligence Neue Client- PaaS
PaaS
Anwendungen und Strategien / BYOD
Interfaces
Kontextuelle und Cloud Computing
Cloud Computing Cloud Computing
Cloud Computing Virtualisierung Data Services &
Data Services &
soziale Virtualisierung
Virtualisierung
Nutzererfahrungen
Internet der Dinge Neue Märkte Governance, Risk & Cloud Computing
Cloud Computing Agile Unternehmen
Compliance
App Stores & Mobile IT IT-Sicherheit Enterprise 2.0 Enterprise 2.0
Marketplaces
Next Generation Big Data Mobile IT BI & Big Data Private Cloud
Private Cloud
Analytics
Big Data Social Networking SaaS
SaaS Identitäts- Ständige
Management Erreichbarkeit
In-Memory Intelligente Social Networking ERP, CRM und SCM Cloud-gerechte
Cloud-gerechte
Computing Branchenlösungen der Zukunft Netzwerkarchitektur
Netzwerkarchitektur
Server mit Internet der Dinge Unified SaaS
SaaS Neue Strategien für
niedrigstem Communications & mobile Plattformen
Energieverbrauch Collaboration
Cloud Computing
Cloud Computing Neue Impulse für Virtualisierung / Konsumerisierung App-Internet
App-Internet
Produktentwicklung Client Virtualisierung
Expert‘s rating. Top Ten IT-Trends 2012, Data from Kurzlechner, 2011
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8. Differentiation
Cloud vs. Hosting
Architecture
Added Value
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9. Global Player
Microsoft
Windows
Azure
Amazon Web
Salesforce
Services
google
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10. Cloud = Hosting?
 Distinction
 Vendor landscape
 Abstraction level
 Development Platform
 Target group
 Value added services
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11. Relationship
 PaaS-App has to run on the platform
 Dependency between app and platform
provider
  mitigation possible and mostly necessary
 Abstraction
 Encapsulation
 Or: App only useful in the platform-context (i.e.
facebook-App)
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12. Cloud vs. Hosting
 Cloud‘s added value
 Services (technical)
 Self-Service
 Sales support
 Shift from CapEx to OpEx
 Response time
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13. Cloud vs. Hosting
 Cloud‘s added value
 Billing increment
 Risk reduction
 Marginal cost optimization
 Cloud services outside the platform
 Orchestrated business processes
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14. Business Models
Software Architecture
Pricing Model
Processes
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15. From Single Tenancy to Multi Tenancy
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16. From Single Tenancy to Multi Tenancy
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17. What Does Multi-Tenant SaaS
Mean?
 Shared infrastructure
handling multiple tenants
 Scale out when more tenants
become active
 Scale down when tenants are
less active
 Scale down when tenants
leave
 Dynamically scaling, elastic
infrastructure
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18. Drives Costs
Scaling (SW+HW)
Expected
Load
Resources
IT CAPACITY
Drives Initial
Investments
Real Load Drives Revenue
TIME
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19. Scaling
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20. Simplest possible Strategical decision, not a
solution technical one
Operative Costs/RGU [€]
Optimization is sexy again
Optimum solution
Small
amount of
large
customers Lots of small customers
Development Costs [€]
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21. Adapt Processes to the Long Tail
The Long Tail
http://www.wired.com/wired/archive/12.10/tail.html
Free: The Future of a Radical Price
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22. Rating/Billing/Payment
 Account/balance infrastructure (debit system
 Web portal for… instead of credit system; example: Skype)
 …registration of new users (has to handle very sensitive  E.g. what to do with remaining balance if user cancels
credit card data  has to be stored safely and his account?
securely, too!)
 Fraud detection
 …maintaining customer billing data (e.g. customer
changes address or credit card provider)  Infrastructure for credit checking and fraud
 …cancelling accounts or users detection; examples are…
 Infrastructure for rating  …credit card checking
 Measure usage  …check of credit ranking for users
 Rage usage with rates/unit  Support infrastructure for rating/billing/payment
 Additional rating logic will be necessary; examples: issues
 Mechanisms for sales discounts (e.g. introductory offer)
 Infrastructure for billing  Alternatives for building such a system from scratch
 Creation of invoices (in total for accounting and could be:
itemized bills for checking the correctness)  Buying an existing billing system (expensive; does
 Sending out invoices (electronically with/without only make sense if customer needs such a system
signature, printed) in other areas, too)
 Storing invoices internally.
 Handle payments with payment partners (e.g.
 Infrastructure for payment; options could be: payment via phone invoice  difficult because
 Credit card payments including mechanisms for such contracts have to be maintained country by
handling payment cancellations, invalid credit cards (e.g.
expired cards), etc. country)
 Payments via online payment solution like PayPal  Use existing SaaS payment solutions (e.g. PayPal;
 Payment with vouchers (e.g. voucher that an end user difficult with pay-per-use)
received with hardware)
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23. Conclusion
Further topics
Outlook
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24. Further topics
 Legal aspects
 Customer acceptance
 Moving your existing data (migration
strategies)
 ROI
 ...
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25. Outlook
 Wide influence on IT  Everything as a
 Hosting <> Cloud service???
 Certain use cases have  How powerful are the
the potential for global players?
economic value  Corruption?
 Evaluation necessary
 Human as a service
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26. Further Information Contact
Thomas Rümmler
 Windows Azure-Plattform – Lösungen thomas.ruemmler@aitgmbh.de
 Programming Windows Azure
 The Windows Azure Handbook,
Volume 1: Planning & Strategy
 David Pallmann‘s Technology Blog http://www.aitgmbh.de
http://blog.aitgmbh.de
 Introduction to the Windows Azure Platform
 Cloud Computing. Praxisratgeber und Rainer Stropek
Einstiegsstrategien rainer@software-architects.at
 Cloud Computing & SaaS
 http://www.microsoft.com/windowsazure/get
started/ http://www.timecockpit.com
http://www.timecockpit.com/de
/Blogs.aspx
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27. Sources
 Krishnan, S. (2010). Programming Windows Azure (1st). Beijing [u.a.]:
O'Reilly.
 Armbrust, M., Fox, A., Griffith, R., Joseph, A. D., Katz, R.
H., Konwinski, A. et al. (2009). Above the Clouds: A Berkeley View of
Cloud Computing. Access on 2012-01-06.
http://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-
28.pdf
 Kurzlechner, W. (CIO Magazin, Hrsg.). (2011). Die Top-10-Listen der
IT-Trends 2012: Gartner, Forrester, IDC & Co., IDG Business Media
GmbH. Access on 2012-01-04.
http://www.cio.de/strategien/2298020/
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