Understanding Architectural Knowledge Sharing in AGSD Teams: An Empirical Study

Nowadays, the use of agile methodologies (AM) in Global Software Development (GSD) -- known as AGSD -- is increasingly common. However, AM and GSD are not completely compatible. On the one hand, in AM people interactions (face-to-face) are preferred over document-based communications to share knowledge. On the other hand, in GSD knowledge sharing is conducted through documents to minimize the effect of the inherent four distances (physical, temporal, language and cultural). This means that tacit knowledge is preferred in AM and explicit knowledge is preferred in GSD. These differences between AM and GSD affect many aspects of software development, for instance: Architectural Knowledge Management. According to the literature, in AGSD it is preferred to convey Architectural Knowledge (AK) by frequent interactions across sites through unstructured and textual electronic media (UTEM) (chats, emails, forums, etc.), that is, AK is articulated in these media. UTEM leave a textual record of the transmitted information, thus leaving an unstructured log of the shared AK of the project. In this paper we present an empirical study to understand AK articulation in UTEM in AGSD teams. Our results consist of an ontology that represents the involved aspects in AK articulation in UTEM in AGSD teams. Additionally, we identified eleven categories of interactions across sites through UTEM, where requirements and coding themes are prominent. Finally, we found that AK in UTEM is perceived as important, regardless the interaction frequency. These results lead us to think that a tool to structure and exploit AK in UTEM is needed in AGSD, in order to bridge the gap between AM and GSD.