TY - JOUR A1 - Stantchev, Vladimir A1 - Tamm, Gerrit T1 - Reducing Information Asymmetry in Cloud Marketplaces JF - International Journal of Human Capital and Information Technology Professionals N2 - Cloud Computing is emerging as a predominant paradigm for obtaining and providing computing functionality in the enterprise. Organizations that are planning to use cloud computing offerings struggle with the question “How do I choose the right offering?” Cloud offerings exhibit a variety of pricing models and different levels of service and functionality. In this article the authors define first Cloud Computing in the context of IT Governance. Then they set criteria to compare different offerings at the level of Software-as-a-Service (SaaS). This is an important precondition for the reduction of the verifiable information asymmetry and uncertainty in the cloud market. Besides deficiencies on the supply side, regarding configuration, display and communication of service bundles, the limited knowledge of potential buyers is main reason for the modest adoption. The authors apply strategies derived from information economics to reduce this asymmetry by integrating information substitutes in the service marketplace description, thereby transforming experience and credence qualities into search qualities. KW - Cloud Marketplaces KW - Cloud Computing KW - Information Asymmetry Y1 - 2012 N1 - Online: https://www.researchgate.net/publication/262206518_Reducing_Information_Asymmetry_in_Cloud_Marketplaces VL - 3 IS - 4 SP - 1 EP - 11 ER - TY - CHAP A1 - Opazo Basaez, Marco A1 - Ghulam, Sarfaraz A1 - Arias Aranda, Daniel A1 - Stantchev, Vladimir T1 - Smart healthcare services: a patient oriented cloud computing solution N2 - Objectives/rationale: Healthcare systems all over the world are facing difficult challenges that have a direct impact and influence the delivery of healthcare services. As a response healthcare institutions are relying in the implementation of Information and communication technologies (ICTs) to overcome difficulties and satisfy patients’ demands in a cost-effective way adopting new technologies capable to innovate, extend, and redefine the way healthcare has been delivered for decades. New technological innovations such as Internet of things (IoT), Smart item technology, and cloud computing can improve the traditional e-healthcare system and extend service provision beyond the hospital facilities by using wireless sensor networks (WSN) and radio frequency identification devices (RFID), providing a new type of services advertised as “smart.” This type of services, enable doctors to treat patients remotely and allows people to do their normal daily routines, occupations, and activities while receiving appropriate, timely, and high-quality ubiquitous healthcare services. Methods: An exploratory study is performed to review the route towards smart healthcare services, emphasizing the use of information and communication technologies (ICTs) and smart item technology as enhancers for smart healthcare services provision. Results/findings: A new technological infrastructure promises to transform medical practice and disease prevention by empowering healthcare institutions with smart items for remote patient monitoring eliminating time-wasting procedures, reducing health costs, improving quality of service and patients satisfaction. Implications/conclusions: Traditional e-healthcare system is transitioning into an interconnected smart-healthcare system potentiated by new technological advances capable to extend healthcare service provision and offer smart healthcare services. KW - Healthcare KW - Cloud Computing Y1 - 2014 N1 - Online: https://www.researchgate.net/publication/275274958_Smart_healthcare_services_a_patient_oriented_cloud_computing_solution ER - TY - CHAP A1 - Tamm, Gerrit A1 - Wünsche, Maria ED - Ciborra, C. U. ED - Mercurio, R. ED - de Marco, M. ED - Martinez, M. ED - Carignani, A. T1 - Strategies to reduce information asymmetry in Web Service Market T2 - Proceedings of the Eleventh European Conference on Information Systems N2 - The web service model provides fundamental advantages compared to the classical software usage model. But transactions in the web service market have by far not reached the expected level. A reason for the tendency of market failure is the verifiable information asymmetry and uncertainty in the web service market. Besides deficiencies on the supply side, regarding configuration, display and communication of web service bundles, the limited web service knowledge of potential buyers are constitutional causes to the modest development and enforcement of the web service model. By the help of strategies derived from information economics the present study elaborates measures to take in order to prevent the market for web based services from failing. The conclusions of an online-based questioning experiment offer strategic recommendations to reduce buyer’s uncertainty in outsourcing decision. Results of the experiment point out the significant positive impact to reduce information asymmetry and transaction uncertainty in the web service market by integrating information substitutes in the web service bundle in order to transform experience and credence qualities into search qualities. It can be verified that web service customers have a higher willingness to pay when information substitutes are integrated into the web service bundle. KW - web service model KW - web service market Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-7034 SP - 1898 EP - 1912 ER - TY - CHAP A1 - Tamm, Gerrit A1 - Günther, Oliver T1 - Business Models for ASP Marketplaces T2 - Proceedings of the Eighth European Conference on Information Systems N2 - Abstract: ASP (Application Server Provider) marketplaces provide a fundamental alternative to the classical business model of software licensing. At this point, it is still unclear why and when customers prefer the ASP model over more traditional approaches. To make ASP more attractive, more knowledge about possible pricing and product strategies is needed. In this paper we describe different business models for ASP marketplaces. We first compare the cost structures of the classical licensing model with the new server-based approach. Then we illustrate how price and product differentiation may improve overall market efficiency. In particular, we show that by selling different software versions for different prices, ASP marketplaces may obtain near-optimal revenues with products that are relatively inexpensive, disaggregated, and customizable. Consumers can thus choose between a wide variety of product lines to fit their differing budgets and requirements. KW - Application Server Provider KW - ASP Y1 - 2000 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-7046 SP - 968 EP - 975 ER - TY - JOUR A1 - Gerke, Kerstin A1 - Tamm, Gerrit T1 - Process mining and data aggregation strategies for business collaboration networks JF - Journal Communications of Arab Computer Society N2 - Business collaboration and information sharing becomes more and more important for companies, mainly driven by economics of scale and the strategic value of network knowledge. In this paper we will describe how process mining results will increase the willingness of cross company data aggregation and the usage of shared business collaboration infrastructures. The results of our contributions are based on process and data analyses in the customer relation management of a leading German passenger airline. As information sharing is considered a central challenge among supply chain partners, we describe the role of data aggregation as a requirement for process mining in collaborative infrastructures. Aggregating data on the one hand can preserve companies from compromising their local data. On the other hand valuable network information may get lost. We use process mining to derive collaborative business process models. Therefore, we evaluate the impact of data aggregation on the significance of process mining results. KW - Process Mining KW - Data Aggregation KW - Business Collaboration Networks Y1 - 2008 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-6490 VL - 1 IS - 1 ER - TY - JOUR A1 - Tamm, Gerrit A1 - Petruch, Konstantin A1 - Bennemann, Michael T1 - SaaS - Software as a Service: Herausforderungen für IT-Abteilungen JF - Journal IM Information Management N2 - Das SaaS-Geschäftsmodell stellt IT-Abteilungen vor neue Herausforderungen und Möglichkeiten. IT-Abteilungen sind gefordert SaaS-Angebote in bestehende IT-Landschaften zu integrieren. Zudem können IT-Abteilungen selbst SaaS-Angebot bereitstellen und sich damit einen neuen Markt unternehmensintern und unternehmensübergreifend erschließen. GobiT und ITIL können für die Steuerung des SaaS-Lieferanten- und Kundenbeziehungsmanagement und für die SaaS-Produktion sinnvoll eingesetzt werden. KW - Software as a Service (SaaS) KW - IT-Management KW - IT-Strategien KW - CobiT KW - ITIL Y1 - 2008 N1 - Volltext aus urheberrechtlichen Gründen nicht verfügbar. Full text not available for copyright reasons. VL - 23 IS - 4 SP - 12 EP - 18 ER - TY - JOUR A1 - Günther, Oliver A1 - Tamm, Gerrit A1 - Leymann, Frank T1 - Pricing web services JF - International Journal of Business Process Integration and Management (IJBPIM) N2 - This paper focuses on the challenges associated with composing and pricing web services. We present the results of an online experiment, where subjects were confronted with a variety of choices and decisions relating to web service markets and service composition. Our analysis shows that people expect the price of a composite web service to be lower than the sum of the prices of the elementary services, that is, users are not willing to pay for aggregation by a third party. To obtain a viable business model for composite web services, non-standard pricing mechanisms, such as auctions and negotiations, possibly supported by electronic agents, have to be taken into consideration. Usage-based pricing schemes, combined with an option to switch to a flat subscription, seem most appropriate to penetrate the developing market for web services. KW - Web Services KW - Pricing KW - Service-oriented Architectures KW - SOAs KW - Web-Based Y1 - 2007 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-6511 VL - 2 IS - 2 SP - 132 EP - 140 ER - TY - JOUR A1 - Günther, Oliver A1 - Tamm, Gerrit A1 - Hansen, Lars A1 - Meseg, Thomas T1 - Application Service Providers: Angebot, Nachfrage und langfristige Perspektiven JF - Fachzeitschrift Wirtschaftsinformatik N2 - Netzbasierte Dienste, im englischen Sprachraum als Web-based Services oder Hosted Services bekannt, gewinnen zunehmend an Popularität. Zahlreiche Softwareanbieter präsentieren sich am Markt als Application Service Provider (ASP), d.h. als Anbieter netzbasierter Anwendungsdienste. Hierbei kann das ASP-Modell den einzigen Vertriebskanal darstellen (reiner ASP) oder aber als Ergänzung neben das klassische Lizenzmodell treten. Während junge Firmen (wie z. B. Salesforce.com) ihr Glück als reiner ASP versuchen, wählen etablierte Anbieter im Regelfall die zuletzt genannte Option SAP mit seinem ASP-Produkt mySAP.com ist hierfür eines der bekannteren Beispiele. KW - Web-based Services KW - Hosted Services KW - Application Service Provider (ASP) Y1 - 2001 N1 - Volltext aus urheberrechtlichen Gründen nicht verfügbar. Full text due to copyright not available. VL - 43 IS - 6 SP - 555 EP - 567 ER - TY - CHAP A1 - Gerke, Kerstin A1 - Petruch, Konstantin A1 - Tamm, Gerrit T1 - Optimization of Service Delivery through Continual Process Improvement: a Case Study T2 - 40. Jahrestagung der Gesellschaft für Informatik e.V. (GI), Leipzig N2 - In order to deliver services of high quality in a cost-effective manner, processes and their support through information technology (IT) play an increasingly significant role. We present an approach, which allows optimizing the service delivery through continual process improvement. This approach combines the 7-step improvement process recommended by ITIL with process mining. On the basis of suggestions derived from process mining, performance indicators of different services are determined and subsequently compared as part of an internal benchmark. The approach, which will be trialed in practice, enables the optimization of service delivery certainly, but it is also concerned with the most effective utilization of limited resources in terms of people and tools. KW - Service Delivery KW - Process Improvement: KW - ITIL KW - Process Mining Y1 - 2010 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-6537 ER - TY - CHAP A1 - Stantchev, Vladimir A1 - Tamm, Gerrit T1 - SOA Governance for the Internet of Services T2 - 18th Biennial Conference of the International Telecommunications Society, Tokio N2 - Keine Angabe No details KW - Internet of Services KW - SOA Y1 - 2010 N1 - Volltext aus urheberrechtlichen Gründen nicht verfügbar. Fulltext due to copyright not available. ER -