Journal of Digital Information Management Thamer Al-rousan, Bassam Al-Shargabi 15 2 2017 http://dline.info/fpaper/jdim/v15i2/jdimv15i2_2.pdf Process and continuous process improvement is a very important aspect in Web-based software development organizations to meet the cost effective objectives of organizations. Despite the importance of Software Process Improvement (SPI), there is enough evidence that the majority of Web-based software development organizations are facing major obstacles to adopt existing SPI models and standards as they perceive them as being oriented towards traditional software organizations. This paper attempts to develop a new software process improvement maturity model in order to guide Web-based software development organizations to enhance their SPI implementation program by learning from the experiences of others organizations that are already out there developing Web-based projects. The backbone of this model is the examination and analyzing the existed SPI approaches found in the literature. Additionally, this model is inspired from capability maturity model Integration (CMMI) and is based on critical success factor and best practices identified through literature.