European grasslands, in the broad sense, are at the crossroads between agricultural and environmental issues at the farm and territory scales. Thus, decisions about grassland management involve not only farmers and their advisers, but land-managing entities and public policy actors as well. The amount of data about grasslands is already considerable and expected to increase in the future. Such data encompasses public satellite images, agricultural statistics, research results, monitoring data from farm networks and information pertaining to commercial farms, sometimes included in large databases owned by private companies. The way such data is analysed and put into perspective in order to support grassland management and decision-making is discussed. Indeed, research has had a key role in this respect by developing methods and tools to evaluate grassland production and services, simulating the impact of management regimes and public policies. It has contributed to the design of monitoring systems and decision support tools. Considering the multi-scale and multi-dimensional issues at stake, a priority for the future could be to build multi-stakeholder networks in order to develop a shared systemic vision. The latter could favour the development of a socio-technical framework favourable to the conciliation of a variety of services.