ABSTRACT Agile practitioners have expressed concern over their inability to correctly estimate costs associated with Agile web software development. This concern has become even more critical as costs associated with development continue to increase. As a result, significant research attention is now intended for gaining a better understanding of the web based projects in context with Agile software-development process as well as constructing and evaluating calibrated software cost estimating tools. This paper discussed the necessity for new metrics and model to fast predict the size, effort and duration for agile based web development projects. The method called web estimation using COCOMOII for Agile methods AGILEMOW, addresses a need to get effort estimation in a limited period using limited information. In contrast with other existing methods, AGILEMOW uses agile characteristics, raw historical information about development capability and high granularity knowledge about the web system to be developed. This research focuses on development of effort estimation model for agile web projects. Creation and use of the model is enlightened in detail. The model was calibrated using the empirical data collected from seven completed web projects. The experimental results prove that model has good estimation accuracy in terms of effort and MMRE. The suggested method/model is simple and particularly appropriate for small or medium size web based systems developed by making use of agile methodologies.
