3 . 2 Phase 2 : Inclusion and Exclusion Criteria

In the last few years, SOA has received an increasing attention to move towards challenges associated with improvement and maintenance of diverse IT environments [1], [2]. For the reason that SOA offers flexible integration and service reusability due to its service-based modular architecture [3]. In fact, the emphasis on services makes SOA inimitable as it also offers transparency through several applications and data sources that encapsulated as a black box. In this way, an integrated pool of IT resources becomes accessible in spite of diverse IT systems, language codes, functionalities, and platforms. So far, SOA has demonstrated itself to be a key paradigm in numerous industries such as banking, healthcare, transport and etc. As mentioned above that in spite its benefits, some of the primary studies reveal that organizations have trouble in receiving full benefits of SOA adoption for several reasons. For instance, lack of knowledge and information about critical success factors in SOA adoption and implementation are key causes of failure [4], [5]. Yet, no detailed systematic study exist that could share critical influencing criteria for successful SOA adoption. In order to fill this gap, the authors believed that the investigation of significant factors pertinent to adoption of SOA in organizations is crucial as the understanding of these factors would help organizations to increase the benefits they get from SOA. This would help raise SOA acceptance rate, too. Accordingly, this paper concentrates on seeking the answer to the following questions of the research: • What studies have been conducted on SOA adoption in organizations? • What are the significant factors that impact SOA adoption in organizations? Aiming at answering the mentioned questions, we studied a large amount of research material to extract influential factors for SOA adoption. All these findings are discussed in the following sections. The rest of the present paper is laid out in the following design. The second section focuses on the works which are interdependent works and the third one focuses on the research process that how actually this research was carried out. Section 4 shares our findings and presents discussion. Section 5 presents the result and further work on this topic. Abstract: Service Oriented Architecture (SOA) has appeared as an absorbing architectural approach that empowers the available systems to reveal their performance in the act of services without creating important changes to the systems. This approach, due to its flexibility of adoption, has been widely appreciated by the businesses. Though there are many studies that depict successful factors of SOA, a few minor cases of failure have also been reported in the literature. In spite of the availability of rich material on SOA, there is no systematic literature review on the influential aspect of SOA adoption factors. Thus, this paper presents a systematic literature review of existing studies (from 2009 to 2017) related to the SOA adoption and its success and failure. The central purpose of the study is to focus on the existing issues and share the findings with researchers. Moreover, the findings of this paper would help the IT experts in organizations focus on the most important factors highlighted in this study, so they could decide whether it is advisable to adopt SOA in their context or not.