More recently, the emphasis has shifted to the ability of vendors in providing high quality rather than low cost software products and services from India. The present research is to explore key organisational and socio-technical factors which influence software quality, through case study of a leading midsize Indian software firm, which offers consulting and software services globally to some of the well known companies, specifically in the context of COTS (ERP) environment. Our research reveals that the factors such as requirements uncertainty, process maturity, communication and control, knowledge transfer and integration, trained personnel and infrastructure facilities have significant impact on achieving product quality. Based on our research, we suggest organisational factors have greater influence on achieving software quality. We present the implications for practice and directions for further research. Copyright © 2011 Inderscience Enterprises Ltd.