The aim of this study is to examine the integration of sustainable business practices into project management, addressing key questions about the need for and impact of sustainability on traditional project management strategies. Based on fundamental principles, such as the Iron Triangle and the concept of Sustainability, including the Triple Bottom Line perspective, the research explores how these elements can be adapted to incorporate sustainability into project management practices, a topic known as Sustainable Project Management (SPM). Through a comprehensive literature review, the study examines the integration of project manager competencies necessary to achieving sustainability objectives and the idea of projects as instruments for change.