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This thesis emphasizes on investigating the relationship between the quality attributes and service oriented architecture (SOA). Due to quality attributes requirements drive the design of software architecture, it is necessary to maintain the positive quality of SOA and improve the negative quality of SOA. This thesis gives an introduction to SOA, Enterprise Service Bus (ESB) and MULE. Then, it covers information on quality of systems and tactics for achieving each quality attribute. Finally, we discuss the quality of SOA in detail, and illustrate how to set up a SOA and how to improve its quality using a case of an order for supermarket. / Order of supermarket

Management of Virtual Organizations faces new challenges that traditional approaches cannot address. This research proposes a performance measurement framework for service oriented virtual organizations including a structural and a procedural component. The structural framework aligns the activities of partners in a virtual organization at three different layers. The first layer is designed for partners’ strategic alignment through coordination of the value creation network. In the second layer, performance dimensions of partners’ collaboration are defined and mapped to the service choreography model. The third layer focuses on assessing effectiveness and efficiency of partners’ domain specific services, which is designed based on ITIL V3 service level management guidelines. In order to consolidate the structural framework, these three layers are integrated using a method for extracting service choreography model and SLA aggregation patterns from the value network. The procedural framework, on the other side, defines the processes required to design the KPI structure, implement the solution, communicate the results, and derive improvements. We propose an implementation architecture that enables inter-organizational performance management in collaborative environments. Then, the IBM products for business process and performance management (IBM BPM, Business Monitor, and Cognos BI) are employed to implement the proposed architecture. The conceptual framework along with the implementation architecture provides an integrated solution for decentralized performance measurement without the need for a central authority. We demonstrate that the proposed solution enhances flexibility, scalability, and interoperability, and supports transparency of partners’ performance information at an agreed-upon level as a basis for mutual trust.

In this research, we propose a knowledge management architecture in a collaborative environment and service oriented organization. The architecture contains five components, including partners, knowledge bases, portals, pipes, and cloud. Each segment of knowledge which is created in partners’ portals will be displayed in the cloud. The cloud contains knowledge from portals. Portals and the cloud will be linked by a specific type of connections (pipes), which presents the knowledge to the cloud without copying them. We implement the proposed architecture online to prove its validity. The prototype that we examine has three partners including finance, insurance, and transportation. Each partner creates knowledge by using its portal and saving it in its own knowledge base (KB). Likewise, each partner has an access to other partners’ portals to ask questions or perform inquiries. The answered questions are saved in the KBs and displayed in the cloud. For implementation, we use Joomla as CMS portals, K2 as KB in each portal, Yahoo Pipes as connections between the portals and the cloud. Finally, the cloud is a webpage that displays knowledge from different portals. We demonstrate that the proposed architecture facilitates sharing knowledge among the partners in the VO, and prevents knowledge duplications in different KBs. Moreover, we could move the stored knowledge from KB to another by using backup feature the CMS portal if any partner want to leave or the VO decides to terminate.

This work deals with Service-Oriented Architecture (SOA) and its impact on SAP products. In the first part of the work we are outlining the development of information systems architectures, after that describing SOA architecture, its basic concept, benefits and risks, ways of implementing and other connections. In the next part we are introducing the SAP company and its big historic moments from the beginning till present. We are analyzing the impact of SOA on SAP product and introducing new solutions -- architectural concept Enterprise SOA and application and integration, service-oriented platform SAP NetWeaver. We are discussing its development and its future. In the last part we are demonstrating practically these new solutions.

This diploma thesis concerns Service-Oriented Architecture and possibilities of using framework NGOSS (New Generation Operations Systems and Software) by its adoption to organization. Diploma thesis is divided into four main parts. The first three parts are theoretical and are the foundation for the last practical part of diploma thesis. The first part is devoted to enterprise architecture and to their importance for a big company. The second part of the diploma thesis is devoted to framework, to their principles and importance in connection with enterprise architecture. In first chapters of this part is devoted to description of framework generally, while the last parts contain the description of particular framework for telecommunication industry named NGOSS. I describe its main characteristics and its main parts with emphasis on its part concerning architecture of information system named TNA (Technology Neutral Architecture). This TNA description also contains description of NGOSS contract, which is very important for practical part of diploma thesis. The third and the last theoretical part is concerned with service oriented architecture and its main architectural elements -- services. In the last and practical part of diploma thesis, I am trying to design NGOSS contract for the chosen SOA service and demonstrate its importance for SOA adoption. The end of the practical part contains conclusion on possibilities and benefits of NGOSS framework by SOA adoption.

This thesis is focused on comparison of common standards used for service orchestration. Orchestration is one of main terms in service oriented architecture, which is a considerable trend in information systems development. This paper is divided into four main parts. The first chapter describes services as a part of current information systems. Definition of service oriented architecture is another subject, where service is a main component for system development and integration. Description of principles of service oriented architecture, that are describing its basis, is the last part of this chapter. The next chapter belongs to coordination of service cooperation, where we can find two basic approaches -- orchestration and choreography. The intention of this chapter is to create theoretical definition of both terms and to compare them. The third part is focused on orchestration methods standardization, where the main standard is BPEL. The history and reasons of creation are mentioned in the beginning, while next section concerns principles of BPEL. Following part describes the version of BPEL called BPEL4WS. Specification of its structure is a main primer for comparison with the latest version named WS-BPEL. The major changes are mentioned in this section. The last chapter is devoted to practical comparison of standards mentioned above. At first, there is created a sample process, based on real situation. The process contains the most important parts of BPEL language. Afterwards, the process is divided into parts, where each of them represents one activity. During description of these parts there is made the above mentioned comparison. The end of the practical part contains main conclusions that were found in this chapter.

With businesses’ and organizations’ steadily growing dependence on IT, the infrastructure of Information Systems has become a lot more complex. Reasons such as company mergers and continuously changing markets have made system integration an increasingly important factor for companies today. This was the background for the following study which sought to solve a company’s system integration problem through the use of a more modern, service-oriented approach. A need for systems to communicate and exchange information in a more reliable and efficient manner had yielded demands for an improved integration. Therefore, the objective was to design a robust and flexible architecture that would handle all of the current systems integration needs while the purpose was to find evidence of whether the use of service-orientation along with the introduction of an Enterprise Service Bus would deliver project value.The resulting prototype makes use of a web service and an Enterprise Service Bus to deliver the functions necessary to satisfy the requirements. Several of the requirements were met through the very use of service-orientation which played a small but nonetheless instrumental part in the construction and development process of the integration solution. / <p>Validerat; 20160616 (global_studentproject_submitter)</p>

Sistemas de software estão cada vez mais presentes na sociedade, bem como são componentes imprescindíveis no mundo contemporâneo, uma vez que facilitam e fomentam as praticidades que os cidadãos e desenvolvedores necessitam. Esses sistemas tornam-se muito mais eficientes quando conseguem interoperar com outros, de forma que troquem recursos e não necessitem implementar essas funcionalidades de maneira individual. Os stakeholders desses sistemas buscam cada vez mais métodos que facilitem essa comunicação, de um jeito prático e sem perder a independência gerencial de cada um. Desse modo, a classe emergente de Sistema de Sistemas (SoS) ganhou uma atenção considerável, por causa de suas características intrínsecas que promovem a interoperabilidade de sistemas distintos e heterogêneos. No entanto, essa comunicação não é trivial, em razão das diferentes interfaces de cada sistema, além da presença de vários stakeholders e a falta de documentação dos sistemas constituintes, dificultando assim, a busca e o uso de cada capacidade. Assim, o objetivo deste trabalho de mestrado é estabelecer uma abordagem baseada em serviços que visa auxiliar os engenheiros de SoS, principalmente na falta de ferramentas de suporte e no esforço para procurar, compreender e adaptar componentes reutilizáveis. A abordagem proposta possui elementos fundamentais que foram utilizados como base para o desenvolvimento de um repositório para engenheiros de SoS e proprietários de sistemas constituintes, de forma organizada e bem documentada, visto que pode ser usado tanto pela comunidade de pesquisa quanto por instituições privadas. / Software systems are increasingly present in society, and consist in indispensable components in the contemporary world, since they facilitate and foster the practices that citizens and developers need. These systems become much more efficient when they can interoperate with others, so that they exchange resources and do not need to implement these features individually. Stakeholders of these systems increasingly seek methods that facilitate such communication in a practical way and without losing the managerial independence of each one. Therefore, the emerging System Of System class (SoS) gained considerable attention, because of its intrinsic characteristics that promote the interoperability of distinct and heterogeneous systems. However, this communication is not trivial, due to the different interfaces of each system, besides the presence of several stakeholders and the lack of documentation of the constituent systems, making it difficult to search and to use each capacity. Thus, the aim of this masters project is to establish a service-based approach that aims to assist SoS engineers, especially in the lack of supporting tools, in the effort to search, understand and adapt reusable components. The proposed approach has fundamental elements that were used as the basis for the development of a repository for SoS engineers and owners of constituent systems, in an organized and well documented way, since it can be used by both the research community and private institutions.

The execution of service oriented applications is based on the invocation of services that perform tasks for the application. Often, multiple service providers provide the same service, with the main differentiating factor being their Quality of Service. Moreover, the quality of a service provider varies over time as it is influenced by environmental factors such as service load, software crashes, and changes in pricing. Therefore, obtaining consistent good quality for each of the required services is not an easy task. Service invocation patterns had been proposed to aid service oriented applications in this task. We can use these invocation patterns to help the application decide which service it should invoke. However, the evaluation of the applications behavior using the invocation patterns when the quality of the service providers changes over time is a problem that has not been addressed yet. To address this, this thesis investigates the utilization and generation of service invocation patterns. Concretely, I have implemented 1) a simulator of service oriented applications that use invocations patterns and 2) an adaptation engine that dynamically generates invocations patterns. The latter can be used to update the values in the service invocation patterns when the quality of the service providers changes. I have implemented the patterns according to existing definitions and integrated them into the application. I have also conducted series of experiments in order to examine the effect of self-adaptation using invocation patterns on the quality of the application. The results of the experiments conducted in this thesis indicate that adaptive invocation patterns have a positive effect on the quality of the application.