While 85% of sustainability executives believe their organisations will achieve their sustainability goals, only 43% of Project Management Office (PMO) leaders share that confidence. The research identified sustainability as the strongest predictor of project success, ranking ahead of traditional delivery factors such as governance structures and project methodologies. Yet despite its demonstrated value, 59% of organisations have not fully integrated sustainability into project delivery and operational decision-making. For Sub-Saharan Africa, where sustainability outcomes directly determine access to international development finance, ESG-linked investment, and climate funding, this execution gap carries particular consequences. About Project Management Institute (PMI): PMI is the leading authority in project management, dedicated to guiding the way to project success.