Aggregation of Service Level Agreements in the Context of Business Processes

Unger, Tobias; Leymann, Frank; Mauchart, S.; Scheibler, Thorsten

doi:10.1109/edoc.2008.29

Cited by 40 publications

(17 citation statements)

References 11 publications

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“…Este tipo de acuerdo se realiza de manera escrita, aunque ya existan algunos formatos para realizarlos, se pueden proponer nuevos esquemas que se adapten al servicio en particular que se prestará. Dentro de este acuerdo es importante resaltar los aspectos que se deben tener en cuenta para realizar un estudio detallado del rendimiento y la calidad del servicio, según algunos autores un tí-pico SLA se compone básicamente de: 1.Partes; 2.Parámetros de servicio de nivel, y 3.Objetivos de Nivel de Servicio [1]. Sin embargo, es importante destacar y tener en cuenta la opinión del cliente a la hora de fijar este tipo de acuerdos, analizar sus requerimientos y definir si el proveedor se encuentra capacitado para satisfacer las necesidades con la prestación del servicio, es indispensable tener en cuenta la definición de los parámetros de nivel de servicio como la disponibilidad, fiabili- [8] Como se observa, este modelo básico plantea tres partes fundamentales que son las partes del acuerdo, los servicios que se van a prestar y las responsabilidades que el prestador de servicio deberá atender para garantizar QoS y QoE.…”

Section: Slaunclassified

Definición de un acuerdo de nivel de servicio que incorpore parámetros y métricas de QoS y QoE

García¹,

Martinez²

2010

Iteckne

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Resumen-Este artículo presenta la descripción del concepto básico de un SLA desde varias perspectivas y enfocado hacia servicios específicos. Del mismo modo se hará énfasis en otros conceptos igualmente importantes, como son la calidad de servicio (QoS) que hace referencia al rendimiento de la red de datos para un servicio especificado y la calidad de experiencia (QoE) que es la calidad percibida por el usuario final. Palabras clave-MDI,MOS,SLA, QoS, QoE,Abstract-This article presents an overview of the basic concept of an SLA seen from several perspectives and be focused on specific services. Moreover it will also focus on other important concepts, like quality of service (QoS) that refers to performance data network for a specified service and quality of experience (QoE) which is the quality perceived by end users

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Section: Slaunclassified

Definición de un acuerdo de nivel de servicio que incorpore parámetros y métricas de QoS y QoE

García¹,

Martinez²

2010

Iteckne

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“…However, it uses the probability distributions to estimate the performance of service oriented applications rather than optimize them as E 3 /Q does. Several research have investigated methods to aggregate SLAs in service oriented applications [14]. They propose functions to aggregate a set of SLAs into end-to-end SLAs when an application consists of multiple services that have their own SLAs.…”

Section: Related Workmentioning

confidence: 99%

Queuing Theoretic and Evolutionary Deployment Optimization with Probabilistic SLAs for Service Oriented Clouds

Wada

Suzuki

Oba³

2009

2009 Congress on Services - I

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This paper focuses on service deployment optimization in cloud computing environments. In a cloud, each service in an application is deployed as one or more service instances. Different service instances operate at different quality of service (QoS) levels. In order to satisfy given service level agreements (SLAs) as end-to-end QoS requirements of an application, the application is required to optimize its deployment configuration of service instances. E 3 /Q is a multiobjective genetic algorithm to solve this problem. By leveraging queuing theory, E 3 /Q estimates the performance of an application and allows for defining SLAs in a probabilistic manner. Simulation results demonstrate that E 3 /Q efficiently obtains deployment configurations that satisfy given SLAs.

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“…A little research has been carried out towards dynamic SLA composition of workflows [5] [10,25]. The research area corresponding to the management of such aggregated SLAs is still wide open.…”

Section: Related Workmentioning

confidence: 99%

Rule-Based Workflow Validation of Hierarchical Service Level Agreements

Haq

Paschke

Schikuta

et al. 2009

2009 Workshops at the Grid and Pervasive Computing Conference

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Business-to-business workflow interoperation across Virtual Organisations (VOs) brings about possibilities for novel business scenarios. In such business scenarios, parts of workflows corresponding to different partners can be aggregated in a producer-consumer manner, making hierarchical structures of added value. Service Level Agreements (SLAs), which are contracts between service providers and service consumers, guarantee the expected quality of service (QoS) to different stake holders at various levels in this hierarchy. This hierarchical SLA choreography and aggregation poses new challenges regarding its description, management, maintenance, validation, trust and security. In this paper we focus on the design and assessment of an agentenabled, rule-based validation framework for the hierarchical SLA aggregation, corresponding to cross-VO workflow cooperation.

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Aggregation of Service Level Agreements in the Context of Business Processes

Cited by 40 publications

References 11 publications

Definición de un acuerdo de nivel de servicio que incorpore parámetros y métricas de QoS y QoE

Definición de un acuerdo de nivel de servicio que incorpore parámetros y métricas de QoS y QoE

Queuing Theoretic and Evolutionary Deployment Optimization with Probabilistic SLAs for Service Oriented Clouds

Rule-Based Workflow Validation of Hierarchical Service Level Agreements

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