Population Services International (PSI) is a globally recognized non-profit organization dedicated to improving the health and well-being of people in developing countries. Established in 1970, PSI leverages innovative approaches to deliver high-quality health services and products to underserved populations. The organization's work spans various health areas, including reproductive health, HIV/AIDS prevention and treatment, malaria control, maternal and child health, and sanitation.

PSI is known for its market-driven approach to health interventions, employing social marketing techniques to promote healthy behaviors and increase the accessibility and affordability of health products. By partnering with governments, private sector companies, and other non-governmental organizations, PSI is able to scale its impact and reach millions of individuals in need.

One of PSI's key strengths is its commitment to evidence-based programming. The organization conducts rigorous research and uses data to design, implement, and evaluate its interventions, ensuring they are effective and responsive to the needs of the communities they serve. PSI's ability to adapt and innovate has led to the development of numerous successful programs that have significantly improved health outcomes in various regions.

PSI's focus on sustainability and local capacity-building ensures that its initiatives have a lasting impact. The organization works closely with local partners to strengthen health systems and empower communities to take ownership of their health. This approach not only enhances the effectiveness of its programs but also fosters resilience and self-reliance among the populations it serves.