NDVI, or Normalized Difference Vegetation Index, is a commonly used remote sensing technique to measure and monitor the amount of live vegetation in a given area. NDVI is calculated using satellite data and takes into account the difference in reflectance between near-infrared and red light wavelengths. This index is used to assess vegetation health, monitor changes in land cover, and analyze environmental conditions such as drought and deforestation. NDVI values range from -1 to 1, with higher values indicating healthier vegetation. The information derived from NDVI is crucial for various applications in agriculture, forestry, ecology, and environmental management.