Browsing by Author "Arrieta, Leire Orue Echevarria"
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Item Dynamic Patterns for Cloud Application Life-Cycle Management(Springer, 2020) Horn, Geir; Arrieta, Leire Orue Echevarria; Di Martino, Beniamino; Skrzypek, Paweł; Kyriazis, Dimosthenis; Tecnalia Research & InnovationCloud applications are by nature dynamic and must react to variations in use, and evolve to adopt new Cloud services, and exploit new capabilities offered by Edge and Fog devices, or within data centers offering Graphics Processing Units (GPUs) or dedicated processors for Artificial Intelligence (AI). Our proposal is to alleviate this complexity by using patterns at all stages of the Cloud application life-cycle: Deployment, automatic service discovery, monitoring, and adaptive application evolution. The main idea of this paper is that it is possible to reduce the complexity of composing, deploying, and evolving Cross-Cloud applications using dynamic patterns.Item Experimenting with application-based benchmarks on different cloud providers via a multi-cloud execution and modeling framework(Springer Verlag, 2015) Evangelinou, Athanasia; Galante, Nunzio Andrea; Kousiouris, George; Giammatteo, Gabriele; Kevani, Elton; Stampoltas, Christoforos; Menychtas, Andreas; Kopaneli, Aliki; Balraj, Kanchanna Ramasamy; Kyriazis, Dimosthenis; Varvarigou, Theodora; Stuer, Peter; Arrieta, Leire Orue Echevarria; Velez, Gorka Mikel Echevarria; Bergmayr, Alexander; Helfert, Markus; Desprez, Frédéric; Ferguson, Donald; Leymann, Frank; Muñoz, Víctor Méndez; Tecnalia Research & InnovationCloud services are emerging today as an innovative IT provisioning model, offering benefits over the traditional approach of provisioning infrastructure. However, the occurrence of multi-tenancy, virtualization and resource sharing issues raise certain difficulties in providing performance estimation during application design or deployment time. In order to assess the performance of cloud services and compare cloud offerings, cloud benchmarks are required. The aim of this paper is to present a mechanism and a benchmarking process for measuring the performance of various cloud service delivery models, while describing this information in a machine understandable format. The suggested framework is responsible for organizing the execution and may support multiple cloud providers. In our work context, benchmarking measurement results are demonstrated from three large commercial cloud providers, Amazon EC2, Microsoft Azure and Flexiant in order to assist with provisioning decisions for cloud users. Furthermore, we present approaches for measuring service performance with the usage of specialized metrics for ranking the services according to a weighted combination of cost, performance and workload.Item From software-AS-A-GOOD TO SAAS: Challenges and needs: Developing a tool supported methodology for the migration of non-saas applications to SaaS(2011) Arrieta, Leire Orue Echevarria; Ibarra, Juncal Alonso; Jan, Gottschick; Restel, Hannes; Tecnalia Research & Innovation; HPAFor all software vendors, but especially small and medium ones and in the current downturn economic situation with such a high competition, businesses that are not prepared to migrate the offerings of their software solutions to the form of online-services not only miss the opportunity to acquire new customers but they also run the risk of losing their existing customers towards new competitors. This transition from a software-as-a-good approach to a software-as-a-service one, is not trivial at all, and there exists a real demand for proven methods to perform the transition from traditional software products to the service concept. Based on this premise, the objective of this position paper is to provide software organizations with a stepwise procedure, methods and tools to migrate non-SaaS applications into SaaS, taking into account not only technical and technological issues but also issues related to business models and how to monetize the final solution. The solution presented here is a theoretical approach that is currently being validated in eight use cases in the Basque Country.Item Software Modernization Revisited: Challenges and Prospects(2015-08-01) Bruneliere, Hugo; Cabot, Jordi; Izquierdo, Javier Luis Canovas; Arrieta, Leire Orue Echevarria; Strauss, Oliver; Wimmer, Manuel; Tecnalia Research & InnovationThe authors discuss important factors to consider when migrating software to the cloud and offer recommendations to maximize the chance of success.