The FAS method is the name of a method for the use-case-driven creation of a functional architecture for systems, first published by Jesko G. Lamm and Tim Weilkiens at the TdSE conference in Munich, Germany, in November 2010. The conference paper is the definition and foundation of the FAS method. Since then it attracts high attention. Jesko and Tim spent more effort to enhance the FAS method. In November 2011 they presented at the TdSE conference in Hamburg, Germany, Artisan Studio tool support for the FAS method together with Andreas Korff from Atego. In December 2011 they have chartered the FAS working group of the GfSE (German chapter of INCOSE) with the aim of further improving the method and providing tool support for major SysML modeling tools. In January 2012 the working group published a Open Source MagicDraw plugin for the FAS method, extending the coverage of supported tools.
The FAS method has been successfully applied in multiple industry projects and it works great. Current research around the FAS method focuses on topics like variant modeling, layered architectures, functional-to-physical mapping and interactions between functions in complex systems, to mention a few.
The official homepage of the FAS method is: http://www.fas-method.org