Evaluating project success in the changing environment of software industry is critical to organizational success. The main issue is projects' diversity in various domains, thus a variable development criteria for each project's success is essential. This paper proposes new model Success by using the Objectives (SbyO) model based on project objectives, stakeholders' priorities, and the project time frame. The SbyO model contribution consists of four components; first, the model evaluates projects success through the degree they achieve their stipulated objective; second, the model considers the importance (or the value) of stakeholders' perspectives in setting the priority of what perspective to consider and what other perspectives to ignore; third, the model takes into account the timeframe for executing the elements of the specified criteria; finally, the model provides SbyO cross-table to the organizations for the practical implementation the model. The SbyO was evaluated by two experts; results show applicability in software systems.