Most of the information technology (IT) systems currently used by Japanese farmers are used for duties such as filing tax records and traceability records to meet the requirements of non-farmers in the government and distribution industry. We focused on introducing the latest technologies such as sensors, wireless networks, and Cloud computing to radically revise approaches to agriculture and conduct business feasibility studies to establish a hypothetical model of Cloud services that make a genuine contribution to agriculture. We have conducted demonstration tests with the cooperation of two Japanese farming corporations. This hypothetical model has much in common with on-site operations such as medical/nursing care and maintenance besides agriculture, so we are working to develop it across a broader range of fields. On the basis of the knowledge acquired through actual agricultural operations and subsequent analysis, we describe the affinity between agriculture and Cloud computing and discuss how the technologies used in the demonstration test can be applied to other fields.