Formal Concept Analysis (FCA) is a multi-disciplinary field built on the solid foundation of lattice and order theory. Besides this, FCA is strongly rooted in philosophical aspects of the mathematical formalization of concept and concept hierarchy. Since its emergence in the 1980s the field has developed into a constantly growing research area in its own right, with a thriving theoretical community further applying and developing this powerful framework of qualitative analysis of data. One of the initial goals of FCA was to promote better communication between lattice theorists and potential users of lattice theory. The increasing number of applications in diverse areas such as data visualization, information retrieval, data mining and knowledge discovery demonstrates how that goal is being met.