Digital Terrain Models (DTM) sometimes called Digital Elevation Models (DEM) is a topographic model of the bare Earth that can be manipulated by computer programs. The data files contain the elevation data of the terrain in a digital format which relates to a rectangular grid.

Digital Transaction Management (DTM) is a cloud computing service that allows users to digitally manage document-based transactions. DTM services aim to speed up the signing of business agreements and contracts by digitizing the process in a way that is fast, accurate and secure.