 The soy moratorium was established in 2006 as a voluntary agreement between major soybean companies to refrain from trading soybeans grown in areas of deforestation in the Brazilian Amazon biome. This study used remote sensing data to identify soybean plantations in these areas, which decreased the need for aerial surveys by nearly 80%. The results suggest that the soy moratorium has had some success in reducing deforestation in the Amazon biome, although it is too early to definitively link the moratorium with the observed decrease in deforestation. This article was authored by Bernardo Machado Pérez, Daniel Ferlan Amral, Leandro Fabiani, and others.