Siemens rounds out the top three for implementation, only narrowly losing out to Autodesk by 0.1%. The narrow (0.1%) margin that separates Siemens from Autodesk is attributed to overall market share, as more users opt for AutoCAD and Inventor. As suggested by the rankings, both software providers are neck and neck, with ease of use for new users of AutoCAD products providing a slightly higher rating. Solid Edge, NX, and NX X are attempting to overcome this gap with extensive training provided by Siemens to new users of CAD software.