Soil survey andKorean Soil Information System (KSIS), The classification are complex and require specialized knowledge, making it challenging for the general public to understand and utilize the results effectively. For this purpose, the Rural Development Administration (RDA) developed the Korea Soil Information System (KSIS) and its Portal https://soil.rda.go.kr/soil/index.jsp (for Korean); https://soil.rda.go.kr/eng/ (for English) to provide soil information and data to various stakeholders. This system serves as the foundation for soil interpretation based on soil surveySoil survey and classification. Soil interpretation essentially groups various soil types according to potential uses, facilitating easier application of soil surveySoil survey data (NAS, NAS, Rural Development Administration (1985) Soils of Korea. 3–12; RDA, Rural Development Administration (2003) Soil survey theory and practical skills. 210–225). This process helps bridge the gap between detailed scientific findings and practical application, allowing users to make informed decisions based on land use recommendationsLand use recommendation(s) for different types of agriculture, such as paddy fields, uplands, and fruit fields. This chapter highlights the Korea Soil Information System operated by the Rural Development Administration, which provides comprehensive data on the distribution of soil types and soil suitability classesSoil suitability class(es) for each crop, based on extensive soil surveysSoil survey. This system serves as a crucial tool for optimizing agricultural productivityAgricultural productivity and sustainable land management.