• Journal of Information Management
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• v.42 no.2
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• pp.67-84
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• 2011

In this paper, our goal is to examine the factors of service quality and user's satisfaction in Software as a Service(SaaS). Based on the theoretical framework like service quality theory we develop and test a theoretical model, propose hypotheses and analyze the effects of SaaS' flexibility and customizability on the service quality and the satisfaction of SaaS' users. For this research, questionnaire survey was conducted with literature study and the PLS(Partial Least Square) was used to analyze the measurement model and hypotheses testing. The PLS analysis results indicate that SaaS' flexibility affects SaaS' service quality and the users' satisfaction and SaaS users' satisfaction is influenced by SaaS' service quality. Furthermore, SaaS' customizability affects SaaS' service quality, however, does not affect the users' satisfaction. Practical implications of these findings and future research implications are also discussed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.4
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• pp.1074-1080
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• 2008

This paper presents a state-of-the-art survey in ASP/SaaS Industry and the development strategy of ASP/SaaS business models which are issued as a new software distribution method recently. First of all, SaaS(Software as a Service) is defined as the evolutionary concept of ASP(Application Service Provider) and then the survey results of domestic ASP/SaaS providers and users are presented. In order to cope with recent and rapid If development environment, the development strategy of the ASP/SaaS business models is proposed. The development strategy suggested in the paper is used as a guideline for ASP/SaaS providers to enter into the new ASP/SaaS business and improve their competition.

• Journal of Korea Multimedia Society
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• v.20 no.7
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• pp.1054-1064
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• 2017

With the development of cloud computing, internet technology and Internet of Things(IoT), most of applications are being smarter and changing from native application to SaaS (Software as a Service) application. New versatile SaaS applications are being released through various app portals (e.g. appstore, googleplay, T-Store, and so on). However, a user has a difficulty in searching, choosing an suitable application to him. It is also hard for him to know what functions of each SaaS application are useful. He wants to be recommended something inter-operated SaaS service according to his personality and his situation. Therefore, this paper presents a way of making mash-up of SaaS applications in order to provide the most convenient inter-operated SaaS service to user. This paper also presents SaaS Application Mash-up Framework (SAMF), complex context and rule matrix. The proposed SAMF is a main system that totally manage SaaS application mash-up service. Complex context and rule matrix are key components in order to recommend what SaaS applications are needed and how those SaaS applications are inter-operated. The SAMF collects complex contexts (User Description, Status Description, SaaS Service Description) in order to choose which SaaS applications are useful, analyze what functions to use, how to mash-up.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.1
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• pp.61-67
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• 2014

A SaaS cloud service represents a model deployed and running on a cloud platform to enable users to use software as an online service. This work proposes a development methodology adequate for the effective development of SaaS cloud services. For doing this, we first analyzed the current state of companies developing SaaS cloud services and identified key factors for the development of SaaS cloud services. Then, we selected and tailored the methodology that is best suited for the development of SaaS cloud services among existing software development methodologies. To validate the applicability of the proposed methodology, we performed a case study tailoring the development methodology adequate for the company developing SaaS cloud services.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.5
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• pp.1446-1465
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• 2022

Diversified SaaS applications allow users more choices to use, according to their own preferences. However, the diversification of SaaS applications also makes it impossible for users to choose the best one. Furthermore, users can't take advantage of the functionality between SaaS applications. In this paper, we propose a platform that provides an SaaS mashup service, by extracting interoperable service functions from SaaS-based applications that independent vendors deploy and supporting a customized service recommendation function through log data binding in the cloud environment. The proposed SaaS mashup service platform consists of a SaaS aggregation framework and a log data binding framework. Each framework was concreted by using Apache Kafka and rule matrix-based recommendation techniques. We present the theoretical basis of implementing the high-performance message-processing function using Kafka. The SaaS mashup service platform, which provides a new type of mashup service by linking SaaS functions based on the above technology described, allows users to combine the required service functions freely and access the results of a rich service-utilization experience, using the SaaS mashup function. The platform developed through SaaS mashup service technology research will enable various flexible SaaS services, expected to contribute to the development of the smart-contents industry and the open market.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.841-842
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• 2009

어플리케이션에 대해 사용한 후 비용을 지불하는 use first, pay later 서비스 개념의 SaaS의 구현 성숙도 모델이 Microsoft 사, Dharmesh Shah, Forrester 사에서 정리되어 발표되었다. 하지만 기존의 SaaS 성숙도 모델은 SaaS 생태계에 존재하는 이해당사자들의 관점 중 서비스 제공자의 관점만 반영되어 SaaS 어플리케이션 사용자, 개발자, 테넌트 관리자의 측면에서 고려된 기술 성숙 방향이 반영되어 있지 않다. 본 논문은 SaaS 기본 이론과 업계 제품에서 조사된 이론에 입각해 SaaS 생태계 전반의 SaaS 이해당사자들 관점에서 SaaS 플랫폼 역량의 발전을 분류할 수 있는 체계를 아키텍처에 기반하여 제시하고자 한다.

• Journal of KIISE:Software and Applications
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• v.37 no.7
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• pp.518-535
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• 2010

Cloud Computing is emerged as an effective reuse paradigm, where service providers operate hardware and software and as a service, and service consumers invoke the service through Internet. Software-as-a-Service (SaaS) is a type of cloud services, where the whole software is designed as a service so that several consumers can reuse the SaaS. While tradition software applications are developed for a specific organization, SaaS is developed for multiple users in the various organizations. Hence, reusability is very essential characteristic of SaaS. Reusability is defined as a metric of how effective and efficient software functionalities can be used by various users. Reusability in SaaS is evaluated by considering three sub-characteristics; applicability, adaptability, and scalability. Since such a SaaS has considerable differences and characteristics from traditional software applications, conventional methods including object-oriented modeling, component-based development method, and service-oriented architecture (SOA) service development method would be limited in developing services which can fulfill these three sub-characteristics related to reusability as well as SaaS-intrinsic characteristics. Hence, there is a great demand for effective processes for developing SaaS cloud services. In this paper, we present a practical process for developing SaaS, which focuses on ensuring reusability. And by performing a case study with our proposed SaaS development process, we evaluate applicability of our proposed process and explain how the process is used in a real domain. Then, we compare our proposed process with others for verifying our study. Through the proposed process, cloud services with high quality can be more effectively developed.

• Journal of Digital Convergence
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• v.10 no.9
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• pp.73-78
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• 2012

The appearance and evolution of cloud service is potentially one of the major advances in information and communication technology. However, it is necessary to identify and understand the various issues of cloud service, both from the perspectives of the providers and the consumers of it. While a lot of studies such as cloud business model, profit model and technology itself are currently taking place in cloud service considering provider's aspects, there are a few researches dealing with cloud service user's aspects. This paper presents the user behavior analysis focused on SaaS users and discusses the development strategy of SaaS service based on the results of user behavior analysis. In order to analyze the user behavior, we surveyed SaaS users divided into two groups such as present and future user groups. Eventually, we proposed the SaaS prospects, development strategy and policy issues based on user behavior analysis.

• Journal of Digital Convergence
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• v.6 no.2
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• pp.65-76
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• 2008

Recently, software distribution method, along with advent of era of Web 2.0, is rapidly evolving from ASP(Application Service Provider) method into SaaS(Soft as a Service) method due to development in concepts and technologies including SOA(Service Oriented Architecture) Web Service, On Demand and Component. Determining factor in market competitiveness of newly emerging SaaS business model will be analyzed by focusing on Group-Wares, POS(Point of Sale) System, CRM(Customer Relationship Management) and ERP(Enterprise Resource Planning), which are the most representative SaaS business models in Korea. It is anticipated that the outcome of analysis of determining factors for market competitiveness for each of the main SaaS Business Models acquired through questionnaire survey can be utilized as important benchmarking material in setting the direction of cultivating SaaS market by the government as well as new entries into SaaS market.

• Journal of Digital Convergence
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• v.10 no.10
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• pp.523-528
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• 2012

The recent appearance and evolution of cloud service including IaaS(Infrastructure as a Service), PaaS(Platform as a Service) and SaaS(Software as a Service) is potentially one of the major advances in information and communication technology. While a lot of studies are currently taking place in the technology itself, there is an equally urgent need for understanding and researching the business-related issues surrounding cloud service. As more and more individuals and companies use the cloud service, their concerns are beginning to grow about just how safe and reliable an environment it is. This paper focus on SaaS as an one of the important cloud service. For successful implementation of SaaS service, it is necessary to establish the certification systems to ensure safety and reliability of SaaS. This paper provides the safe and reliable framework for systematic SaaS certification systems. In order to develop it, the critical issues related to service quality and certification of SaaS service are identified and the systematic framework for certification systems of SaaS service and service provider domains are developed. An evaluation methodology for the developed certification systems is also proposed.