The document discusses the concept of cloud computing and how it represents an intelligent symbiosis between enterprise IT and internet IT. It explores the essential characteristics and service models of cloud computing, including infrastructure as a service, platform as a service, and software as a service. The document also examines challenges such as consistency, availability, and partitioning in cloud environments.
9. 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/
10. But
*aaS
Is Not
A Stack!
http://www.flickr.com/photos/jackol/133765382/
11. Service Model
Infrastructure Platform Software
as a as a as a
Service Service Service
Commodity
Virtualization
http://www.flickr.com/photos/josepina/195282706/
13. Service Model
Infrastructure Platform Software
as a as a as a
Service Service Service
Elastic
Architecture
http://www.flickr.com/photos/saturnism/195649679/
15. Service Model
Infrastructure Platform Software
as a as a as a
Service Service Service
Tenant
Kernel
http://www.flickr.com/photos/sindre-wimberger/445284479
20. BASE
Basically Available
Soft State
Eventual consistency
ACID
Atomicity
Consistency
Isolation
Durability
http://www.flickr.com/photos/ptillinghast/3445433978/
21. Consistency
Availability
Partition Tolerance
CAP-Theorem: You can have at most two of these
http://www.flickr.com/photos/sgw/3138741071/
27. 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/
28. 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/
35. Mobile Computing
Information Policy
Social Computing
*aaS
Eventual Consistency
Availability Elasticity Tenancy Workloads
http://www.flickr.com/photos/96dpi/2119924191/