overcoming cost intransparency of cloud computing
DESCRIPTION
Presentation hold during Cloud Computing Conference 2011 in Noordwijkerhout, Netherlands 2011. This is presentation is about missing cost estimation models in cloud computing and presents firsts considerations how to overcome this.TRANSCRIPT
OVERCOMING EX ANTE COST INTRANSPARENCY OF CLOUDS
Nane Kratzke
1 Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems
Analyzing Impacts of Clouds
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 2
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Analyzing Impacts of Clouds to COBIT
Reduced efforts for
• Continuous Service • Manageability of Performance and Capacity • Procure IT-Resources and Identify and allocate costs • Monitor and evaluate IT-performance
Additional efforts for
• Assess and manage IT-Risks • Ensure compliancy with external requirements • More complex Configuration management and IT-
Processes/Relationships
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 3
Analyzing Impacts of Clouds to TOGAF
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 4
Reduced efforts for
• Use billable SaaS or PaaS items as building blocks for information systems architecture • Data architecture • Application architecture
• Use billable IaaS items as building blocks for technology architecture
• Use scalability and cost associativity as well as pay-as-you-go to generate new oportunities and solutions • 100 processing units for one hour • 100 hours of one processing unit • Produce (almost) the same costs • Experimentation is cheap
Analyzing Impacts of Clouds to ITIL
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 5
• Service Design • Capacity Management • Availability Managemet • Continuity Management
• Service Operation • Event Management • Incident Management • Problem Management
Reduced efforts for
• Service Design • Service Level Management • Information Security
Management • Service Transition
• Asset and Configuration Management
Additional efforts for
Qualitative Weaknesses and Strengths of Clouds
Strength Weakness
Inherent scalability, continuousity and
availability
Cost transparency (ex post)
Provision of automated functional
services
Physical infrastructure and low level
service free (customer perspective)
More complex service, process and
configuration management
More complex security management
More complex compliancy
management
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 6
So – everthing is beautifull? No substantial show stoppers?
• Higher order showstoppers for cloud approaches • Security and Compliance Management • Incompatible SLAs • Especially national laws, privacy, data ownership,
confidentiality, data location, forensic evidence, auditing, etc.
• Decision making showstoppers for cloud approaches • Ex post but no ex ante cost transparency • Relevant costs of cloud approaches must be known before a
system enters operation • Otherwise IT investment decisions pro or contra cloud based
approaches can not been made
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 7
Hard to handle
Could be solved
Costs are influenced by
Your System Usage
XaaS Usage Your System Architecture
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 8
Costs
Costs are influenced by ... To be validated by ongoing research
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 9
User accounts
Amount of unique visitors/users
Amounts of user/system requests
24x7
Loadbalancing and autoscaling asset groups
Structure of processing tier (network)
Structure of storage and backup tier (network)
Data transfer
Data storage
Data processing
Monitoring efforts (e.g. events, IaaS)
Amount of sub-service requests (PaaS, SaaS)
Your System Usage
Your System Architecture
Generated XaaS Usage
Finding nearest neighbors to exploit comparable ex-post costs of other systems
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 10
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operated systems with ex post costs planned system
cost estimations
Select comparable systems and collected data by similarity
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 11
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Selection of the most comparable operated system
System Architecture
Conclusion or: Vision for ongoing research
Prof. Dr. rer. nat. Nane Kratzke Computer Science and Business Information Systems 12
CLOUDLAB Cost, Usage, and Architecture Analytics for Cloud-based Information Systems
• Collect and Provide Data • Your System Usage, Provided Service Usage • Your System Architecture, Costs (Billing)
• of real world cloud-based applications/services in order to estimate costs for planned cloud-based costs/services