02199nam 2200529zu 450 991037575170332120210807005150.01-921770-31-7(CKB)3780000000085544(SSID)ssj0001456151(PQKBManifestationID)11765748(PQKBTitleCode)TC0001456151(PQKBWorkID)11409305(PQKB)11074753(WaSeSS)IndRDA00038261(Association for Computing Machinery)10.5555/2667490(EXLCZ)99378000000008554420160829d2014 uy engur|||||||||||txtccrComputing Education 2014 : proceedings of the sixteenth Australasian Computing Education Conference : (ACE 2014), Auckland, New Zealand, 20 - 23 January 2014[Place of publication not identified]Australian Computer Society20141 online resource (174 pages)Conferences in Research and Practice in Information Technology Series ;Volume 148Australian Computer Science Communications ;Volume 36, Number 2Bibliographic Level Mode of Issuance: MonographConferences in research and practice in information technology series ;Volume 148.Australian computer science communications ;Volume 36, Number 2.ACE 2014Australasian Computing Education 2014Proceedings of the sixteenth Australasian Computing Education Conference - Volume 148Engineering & Applied SciencesHILCCComputer ScienceHILCCEngineering & Applied SciencesComputer ScienceWhalley Jacqueline861276Whalley JacquelineD'Souza DarylAssociation for Computing Machinery-Digital Library.PQKBBOOK9910375751703321Computing Education 2014 : proceedings of the sixteenth Australasian Computing Education Conference : (ACE 2014), Auckland, New Zealand, 20 - 23 January 20141922218UNINA04253nam 22004213a 450 991083185910332120250203235540.097838630963283863096320https://doi.org/10.20378/irbo-54102(CKB)4950000000289985(ScCtBLL)ea3ecd0e-b11c-437b-bbd2-ad67222f75a0(OCoLC)1250428660(Perlego)2327443(EXLCZ)99495000000028998520250203i20192021 uu enguru||||||||||txtrdacontentcrdamediacrrdacarrierOn the Portability of Applications in Platform as a ServiceStefan KolbVolume 34[s.l.] :Bamberg University Press,2019.1 online resource (1 p.)Schriften aus der Fakultät Wirtschaftsinformatik und Angewandte InformatikIn recent years, the cloud hype has led to a multitude of different providers and offerings across the entire cloud market, from Infrastructure as a Service (IaaS) to Platform as a Service (PaaS) to Software as a Service (SaaS). Despite the high popularity, there are still a number of problems and deficiencies. In particular with PaaS, the advertised portability between different clouds is hampered by a heterogeneous, difficult to compare provider landscape, technological differences between providers, and the lack of common standards. Therefore, the selection of a suitable provider and a potential change between different providers may involve substantial (migration) costs. Thus, the thesis deals with the analysis and improvement of application portability in PaaS environments. In the course of this, obstacles over the typical life cycle of an application - from the selection of a suitable cloud provider, through the deployment of the application, to the operation of the application - are considered. As foundation for further investigations, an improved delimitation and conceptualization of PaaS through a categorization, the definition of a reference model, and the establishment of a knowledge database is presented. As it turns out, in particular the heterogeneous provider landscape in this area is an obstacle for the assessment and feasibility of application portability. To solve this problem, the thesis presents a decision support system for the selection and comparison of suitable cloud platforms. Based on the PaaS model, a heuristic is proposed which can identify potential partners by matching the technological software ecosystem of the providers with the requirements of an application or a user. With the help of this system, it is possible for a user to identify offerings that enable application portability. To validate the approach, a case study with a real-world application is conducted that is migrated to different cloud platforms. In this context, we also develop a suitable assessment framework for measuring migration efforts, which allows making the differences between compatible providers quantifiable. The application management interface of the providers is identified as a central effort factor of the migration. Despite the semantically identical use cases, different interfaces are used by the providers for the management of the application's life cycle. Finally, to reduce the effort in this area, the thesis presents a unified interface for application deployment and management. In summary, the work provides evidence of application portability problems in PaaS environments and presents a framework for early detection and avoidance. In addition, the results of the work contribute to a reduction of lock-in effects by proposing a suitable standard for management interfaces.Schriften aus der Fakultät Wirtschaftsinformatik und Angewandte InformatikComputers / Software Development & EngineeringbisacshComputersComputers / Software Development & EngineeringComputers.Kolb Stefan1786604ScCtBLLScCtBLLBOOK9910831859103321On the Portability of Applications in Platform as a Service4318473UNINA