Feature encoding is defined as the conversion of data into a series of codes. The Application Schemas for Feature Encoding (ASFE) Focus Group is responsible for those aspects of the standardization of GEOINT relating to data structures, exchange and storage of geospatial intelligence. This includes data format, feature and attribute coding schemes, exchange media, administrative procedures, representations of geographic feature geometry, feature attribution information, and other geographic information.

The ASFE FG coordinates its activities with the other GWG focus groups, as well as with other Technical Working Groups (TWG) under the Information Technology Standards Committee (ITSC).