The overarching aim of the iFAROS project is to sustain and increase agronomic productivity and environmental performance for small European farmers by exploiting multi-source data to optimise fertilisation in wheat cultivation. The specific technical objectives of iFAROS are: (i) to develop a novel cloud-based application, acting as an intelligent middleware with data analytics capabilities; (ii) to improve decision support algorithms for farm management and operations; (iii) to develop an advanced FMS for applying and exploiting (i) and (ii) in an easy-to-understand manner, also for small farmers; and, (iv) to apply the produced site-specific management fertiliser application map in an automated way by utilising ISOBUS. All research and development activities shall be grounded in and thoroughly tested under real-world conditions of wheat production. Complementary usage conditions in Germany, Belgium, Switzerland and Spain will ensure the broad applicability of project results.