As part of the Internet of Food & Farm project for the adoption of IoT in the agri-food sector, this paper presents the design, implementation, and evaluation of an end-to-end and open IoT system architecture. This use case aims to further improve the entire viticulture value chain in a renowned estate of 135 ha in the Bordeaux area (France). Based on the first generation of end-devices (∼74) and gateways, the team designed the system’s architecture and relied on a LoRa network to collect and analyze the environmental data that would ultimately allow them to optimize resource consumption, improve vine yield and wine quality.