This document summarizes a research paper that evaluated a 10-year development project working with isolated Quechua indigenous groups in Peru. The project aimed to help the groups escape poverty by diversifying agricultural production, improving food availability and diversity, strengthening local organizations, and expanding families' capabilities—with focus on vulnerable groups like children and women. Through interviews, observations, and nutritional assessments of children, the research found the horizontal development approach was effective in improving incomes, nutrition, vulnerability, gender inequalities, and training. While joint marketing faced limitations, with further capacity building this model shows potential to access markets cooperatively and take poverty reduction another step. Recommendations were made for future actions and more research on informal supply chains.