VAT utilizes the Geo Engine Operator Toolbox to provide a wide range of geospatial processing capabilities. The Operator Toolbox is a powerful tool for processing and analyzing geospatial data. It provides a wide range of operators for processing raster and vector data, such as filtering, combining, and aggregating. The Operator Toolbox is designed to be user-friendly and intuitive, allowing users to easily create complex processing chains. The Operator Toolbox is also extensible, allowing users to create custom expressions to meet their specific needs.