Project overlapping and its influence on the product quality

Time to market, quality and cost are the three most important factors when developing software. In order to achieve and retain a leading position in the market, developers are forced to produce more complex functionalities, much faster and more frequently. In such conditions, it is hard to keep a high quality level and low cost. The article focuses on the reliability aspect of quality as one of the most important quality factors to the customer. Special attention is devoted to the reliability of the software product being developed in project overlapping conditions. The Weibull reliability growth model for predicting the reliability of a product during the development process is adapted and applied to historical data of a sequence of overlapping projects. A few useful tips on reliability modeling for project management and planning in project overlapping conditions are presented