In diverse industrial and academic environments, the quality of software has been evaluated (validated) using different analytic studies. It is common practice in these environments to use statistical models for the assurance, control and evaluation of the quality of a software product or process. A number of industries in the safety-critical sector are forced nowadays to use such processes by industry-specific standards (e.g., the DO-178B standard for airborne software systems).

The contribution of the present work is focused on the development of a methodology for the evaluation and analysis of the reliability of web-based software applications. We tested our methodology in a web-based software system and used statistical modeling theory for the analysis and evaluation of the reliability. The behavior of the system under ideal conditions was evaluated and compared against the operation of the system executing under real conditions. The results obtained demonstrated the effectiveness and applicability of our methodology.