Abstract
Open Source Software (OSS) ’s are software products developed by community. The source code and development process of OSS are open to public. Because the license fee is not required, many commercial IT service make use of OSS. Even one decide to adopt OSS, though, the operation costs of OSS are required. It is harder to predict operation cost of OSS than those of proprietary software. In this paper, we propose a cost model based on practical use of OSS. We applied the model to two of the most popular OSSs, Wordpress and Moodle, and verified the feasibility of the model. We also discuss operation strategies of OSS to reduce operation cost.
https://ror.org/04rymkk69 
