Bayesian Networks for Reliability Analysis of Complex Systems
IBERAMIA '98 Proceedings of the 6th Ibero-American Conference on AI: Progress in Artificial Intelligence
The Galileo Fault Tree Analysis Tool
FTCS '99 Proceedings of the Twenty-Ninth Annual International Symposium on Fault-Tolerant Computing
QoS-Assured Service Composition in Managed Service Overlay Networks
ICDCS '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
QoS-Aware Middleware for Web Services Composition
IEEE Transactions on Software Engineering
Service Selection Algorithms for Web Services with End-to-End QoS Constraints
CEC '04 Proceedings of the IEEE International Conference on E-Commerce Technology
Principal agent theory and its application to analyze outsourcing of software development
EDSER '05 Proceedings of the seventh international workshop on Economics-driven software engineering research
Using Repairable Fault Trees for the Evaluation of Design Choices for Critical Repairable Systems
HASE '05 Proceedings of the Ninth IEEE International Symposium on High-Assurance Systems Engineering
Handbook of Constraint Programming (Foundations of Artificial Intelligence)
Handbook of Constraint Programming (Foundations of Artificial Intelligence)
A new approach to modeling the system reliability: dynamic reliability block diagrams
RAMS '06 Proceedings of the RAMS '06. Annual Reliability and Maintainability Symposium, 2006.
A compositional semantics for dynamic fault trees in terms of interactive Markov chains
ATVA'07 Proceedings of the 5th international conference on Automated technology for verification and analysis
Model-based qualitative risk assessment for availability of IT infrastructures
Software and Systems Modeling (SoSyM)
An approach to understanding policy based on autonomy and voluntary cooperation
DSOM'05 Proceedings of the 16th IFIP/IEEE Ambient Networks international conference on Distributed Systems: operations and Management
Global and local qos guarantee in web service selection
BPM'05 Proceedings of the Third international conference on Business Process Management
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Information technology (IT) service availability is at the core of customer satisfaction and business success for today's organisations. Many medium- to large-size organisations outsource part of their IT services to external providers, with service-level agreements describing the agreed availability of outsourced service components. Availability management of partially outsourced IT services is a non-trivial task since classic approaches for calculating availability are not applicable, and IT managers can only rely on their expertise to fulfil it. This often leads to the adoption of non-optimal solutions. In this paper we present A2thOS, a framework to calculate the availability of partially outsourced IT services in the presence of SLAs and to achieve a cost-optimal choice of availability levels for outsourced IT components while guaranteeing a target availability level for the service. Copyright © 2011 John Wiley & Sons, Ltd.