Offshore software outsourcing is a widely used business strategy for producing high-quality software at low cost. Trust plays a vital role in establishing the offshore software outsourcing relationships between client and vendor organisations. The objective of this research study is to identify factors via systematic literature review (SLR) that are important for establishing trust in offshore software outsourcing relationships. The authors have performed an SLR by applying the customised search strings, which were derived from the research questions. The authors have identified factors such as face-to-face meeting, better communication, contract management between client and vendor, defining processes, tools, procedures and policies, reliable management, knowledge sharing, mutual expectations, better client-vendor relationship and training programmes that are generally considered critical for establishing trust in offshore software outsourcing relationships. The results also reveal the similarities and differences in the factors identified through different study strategies and in different continents. Offshore software outsourcing companies should focus on the frequently cited factors in order to compete in the offshore software outsourcing business.

Context Global software development (GSD) promises high‐quality software at low cost. GSD enables around‐the‐clock development to achieve maximum production in a short period of time by using expertise around the globe. This development is only possible if tasks are effectively distributed among sites to ensure smooth development. Therefore, one of the key challenges of GSD is to design a task allocation strategy. Objective The objective of this study is to identify various factors that influence task allocation decisions in GSD and to assess their relative importance. We also aim to determine the interrelationship between the factors along with role played by product architecture and communication and coordination needs during task allocation. Methods We used multiple methods to collect data about the task allocation factors and process. A web‐based survey of 54 GSD practitioners from around the globe was conducted to identify the factors and their relative importance for task allocation decision. The selection of the sample was performed via the snowball sampling technique. To increase the sample size, the survey was also posted on social media, that is, Facebook, LinkedIn, and Twitter. Nonparametric statistical tests were applied on the response data to identify correlations and significance. Interviews were conducted from 11 project managers having 10 to 30 years GSD experience to gain insight into the dynamics of task allocation process. Results The survey results highlight “expertise,” “site characteristics,” and “task site dependency” as the most important factors for a task allocation decision. The interview study has highlighted the importance of situation‐specific decision making during task allocation. The significance of factors varies with the characteristics of task, characteristics of organization, type of GSD, and objective of doing GSD. The culture and time differences between distributed sites have been assigned a low priority by the majority of the practitioners. The most common way of distributing task is functional area of expertise and phase‐based division, where detailed architecture is not considered. Interdependent modules are not allocated to distributed sites because of communication and coordination overhead. Our results also demonstrate a correlation between various factors and support Conway's law. Conclusions We have interesting results in which certain factors are ranked differently from the prevalent views in the GSD literature. The survey results have also confirmed the application of Conway's law in practice for task allocation, where interdependent modules are not allocated to distributed sites. The significance of factors varies with characteristics of task, characteristics of organization, type of GSD, and objective of GSD, which require trade‐off between factors. The need of a well‐defined situation‐specific task allocation framework is evident from the results of survey and interview study. The outline of a task allocation framework for GSD is presented.

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