Cloud Computing
 im Unternehmen

      Lothar Wieske
     DB Systel GmbH




       http://www.flickr.com/photos/learningtour/2200588898/
Cloud Computing …




… an Intelligent Symbiosis of

      Enterprise IT and Internet IT

                           http://www.flickr.com/photos/photonquantique/4711505006/
http://www.flickr.com/photos/sparktography/2485147794/




Cloud Computing

Mobile Computing

Social Computing
On-Demand Self Service




                    http://www.flickr.com/photos/muehlinghaus/228976980/
Broad Network Access




                   http://www.flickr.com/photos/darrenhester/3971567234/
Resource Pooling




                   http://www.flickr.com/photos/sejanc/2373309843/
Rapid Elasticity




                   http://www.flickr.com/photos/macke827/4437926761/
Measured Service




                   http://www.flickr.com/photos/obraka/4005579494/
Cloud Computing
                            Essential Characteristics

On-Demand        Broad Network        Resource            Rapid                    Measured
Self-Service        Access             Pooling           Elasticity                 Service



                                    Service Model

     Infrastructure                   Platform                           Software
          as a                          as a                               as a
         Service                      Service                            Service


                            Essential Characteristics

     Public               Private                   Hybrid                    Community
     Cloud                Cloud                     Cloud                       Cloud




                                                                http://www.flickr.com/photos/ancawonka/65927497/
But

 *aaS

 Is Not

A Stack!




           http://www.flickr.com/photos/jackol/133765382/
Service Model

Infrastructure     Platform              Software
     as a            as a                  as a
    Service        Service               Service




 Commodity
Virtualization




                                 http://www.flickr.com/photos/josepina/195282706/
Demo: Availability




                     http://www.flickr.com/photos/curiouskiwi/89209429/
Service Model

Infrastructure     Platform               Software
as a                 as a                   as a
Service            Service                Service




                    Elastic
                  Architecture




                                 http://www.flickr.com/photos/saturnism/195649679/
Demo: Elasticity




                   http://www.flickr.com/photos/curiouskiwi/89209429/
Service Model

Infrastructure     Platform                      Software
as a                 as a                          as a
Service            Service                       Service




                                                   Tenant
                                                   Kernel




                                 http://www.flickr.com/photos/sindre-wimberger/445284479
Demo: Tenancy




                http://www.flickr.com/photos/curiouskiwi/89209429/
Demo: Identity




                 http://www.flickr.com/photos/curiouskiwi/89209429/
SaaS
        Multi-Tenant Database

                                        PaaS
Blobs     Tables     Queues     RDBMS



                                        IaaS
            File Systems




                                                    Cloud
                                                   Storage
                                                 Abstractions
                                               http://www.flickr.com/photos/fcstpauli/2607423722/
http://www.flickr.com/photos/sheeshoo/24039443/
BASE
               Basically Available
                   Soft State
              Eventual consistency
ACID
 Atomicity
Consistency
 Isolation
 Durability




                http://www.flickr.com/photos/ptillinghast/3445433978/
Consistency
                         Availability
                     Partition Tolerance




CAP-Theorem: You can have at most two of these
                                  http://www.flickr.com/photos/sgw/3138741071/
Two-Sided Markets




         http://www.flickr.com/photos/multiget/1523714050/
Cloud Governance




           http://www.flickr.com/photos/leftmade/4962917207/
Information




              http://www.flickr.com/photos/64479867@N00/3454997061/
http://www.flickr.com/photos/mathias764/3852888543/




                                                                      Compliance Bound



                                                      Revenue Bound



                            Risk Bound
                                                                                         Application
Workloads




http://www.flickr.com/photos/badlyinvolved/3744459472/
Social Media   Productivity   LOB Apps                     LOB Apps
 Wiki/Blog     Email/Office     Multi                        Single
                               Tenant                       Instance


  10.000          1.000         100                              10

                                        http://www.flickr.com/photos/44534236@N00/2497088767/
Email Cost Comparision (Monthly)

                                      Mobile Executive

                                      Information Worker

                                      Occasional User




  $25,18          $25,08
                                           $20,32
                                                              $8,47

On Premise      Cloud Based       Exchange Online        Google Apps
                              n = 15.000




                                                           http://www.flickr.com/photos/lilit/100817175/
Datacenter Cost (Monthly)




http://mvdirona.com/jrh/TalksAndPapers/PerspectivesDataCenterCostAndPower.xls




                                                               http://www.flickr.com/photos/lilit/100817175/
Stealth IT




             http://www.flickr.com/photos/av8pix/2444406238/
Strategy




           http://www.flickr.com/photos/badlyinvolved/3744459472/
http://www.flickr.com/photos/eriwst/2303608353/
http://www.flickr.com/photos/hoosadork/488540263/
Mobile Computing
                            Information Policy
Social Computing
                                                    *aaS
                        Eventual Consistency




Availability   Elasticity       Tenancy      Workloads




                                                 http://www.flickr.com/photos/96dpi/2119924191/
IT Transformation




                    http://www.flickr.com/photos/96dpi/2119924191/
Unternehmens-IT
Internet-IT
Eventual Consistency
Two-Sided Markets
www.cloud-computing-buch.de
                              http://www.flickr.com/photos/teliko82/1875627696/

Cloud Computing im Unternehmen / Jan 25th 2011