Measuring the Scalability of Cloud-based Software Services

Measuring and testing the performance of cloud-based software services is critically important in the context of rapid growth of cloud computing. Scalability, elasticity and efficiency are interrelated aspects of performance of cloud-based software services. Here we present a work that is focused on measuring the scalability of cloud-based software services in technical terms. We introduce technical scalability metrics inspired by earlier technical metrics of elasticity

A Systematic Mapping Study of Empirical Studies on Software Cloud Testing Methods

Context: Software has become more complicated, dynamic, and asynchronous than ever, making testing more challenging. With the increasing interest in the development of cloud computing, and increasing demand for cloud-based services, it has become essential to systematically review the research in the area of software testing in the context of cloud environments. Objective: The purpose of this systematic mapping study is to provide an overview of the empirical research in the area of software cloud-based testing, in order to build a classification scheme. We investigate functional and non-functional testing methods, the application of these methods, and the purpose of testing using these methods. Method: We searched for electronically available papers in order to find relevant literature and to extract and analyze data about the methods used. Result: We identified 69 primary studies reported in 75 research papers published in academic journals, conferences, and edited books. Conclusion: We found that only a minority of the studies combine rigorous statistical analysis with quantitative results. The majority of the considered studies present early results, using a single experiment to evaluate their proposed solution

Scalability performance measurement and testing of cloud-based software services

Cloud-based software services have become more popular and dependable and are ideal for businesses with growing or changing workload demands. These services are increasing rapidly due to the reduced hosting costs and the increased availability and efficiency of computing resources. The delivery of cloud-based software services is based on the underlying cloud infrastructure supported by cloud providers, which delivers the potential for scalability that follows the pay-as-you-go model. Performance and scalability testing and measurements of those services are necessary for future optimisations and growth of cloud computing to support the Service Level Agreement (SLA) compliant quality of cloud services, especially in the context of rapidly expanding quantity of service delivery. This thesis addresses an important issue, understanding the scalability of cloud-based software services from a technical perspective, which is very important as more software solutions are migrated to the cloud. A novel testing and quantifying approach for the scalability performance of cloud-based software services is described. Two technical scalability metrics for software services that have been deployed and distributed in cloud environments, have been formulated: volume and quality scalability metrics based on the number of software instances and the average response time. The experimental analysis comprises three stages. The first stage involves demonstrating the approach and the metrics using real-world could-based software service running on Amazon EC2 cloud using three demand scenarios. The second stage aims to extend the practicality of the metrics with experiments on two public cloud environments (Amazon EC2 and Microsoft Azure) with two cloud-based software serices to demonstrate the use of these metrics. The experimental analysis considers three sets of comparisons to provide the platform to construct the metrics as a basis that can be used effectively to compare the scalability of software on cloud environments, consequently supporting deployment decisions with technical arguments. Moreover, the work integrates the technical scalability metrics with an earlier utility-oriented scalability metric. The third stage is a case study of application-level fault inection using real-world cloud-based software services running on Amazon EC2 cloud to demonstrate the effect of fault scenarios on the scalability behaviour. The results show that the technical metrics quantify explicitly the technical scalability performance of the cloud-based software services, and that they allow clear assessment of the impact of demand scenarios, cloud platform and fault injection on the software services’ scalability behaviour. The studies undertaken in this thesis have provided a valuable insight into the scalability of cloud-based software services delivery

Digital marketing, elements of the public sector competition value chain in Barranquilla, (Colombia)

La organización en la actualidad están obligadas a generar mayores beneficios a sus consumidores para lograr mayor posicionamiento en el mercado, eso depende del manejo de factores de competitividad internos y externos que predominan en las organizaciones medianas en el sector de la publicidad digital en Barranquilla. El objetivo de esta investigación fue describir el marketing digital del sector publicitario. La investigación es descriptiva con diseño no experimental y transversal. La muestra estuvo conformada por 15 empresas, cumpliendo los criterios: Empresa mediana, con departamento de Marketing digital, domiciliada en Barranquilla. Los resultados fueron descripción el marketing digital del sector publicitario, de acuerdo a los factores internos y externos en estas empresas presentan donde existe una consistencia moderada en la dinámica de respuesta de la empresa ante factores externos y viceversa. Se concluyó que las empresas de este sector requieren de estrategias que promuevan el desarrollo de los indicadores internos de competitividad que respondan a los factores cambiantes externo.The organization is currently forced to generate greater benefits to its consumers to achieve greater market positioning, that depends on the management of internal and external competitiveness factors that predominates in medium-sized organizations in the digital advertising sector in Barranquilla. The objective of this research was to describe the digital marketing of the advertising sector. The research is descriptive with non-experimental and transversal design. The sample was composed by 15 companies, fulfilling the criteria: Medium company, with department of Digital Marketing, placed in Barranquilla. The results were a description digital marketing of the advertising sector, according of the internal and external factors in these companies present where there is a moderate consistency in the dynamics of the company’s response to external factors and vice versa. It was concluded that companies in this sector have difficulties in strategies that promote the development of internal competitiveness indicators that respond to changing external factors