The palm oil processing industry is the largest foreign exchange-producing industry for the Indonesian economy currently and is increasing with the presence of B-30 Mandatory in Indonesia. The focus of this paper to decide the most suitable Internet of Things technology to be implemented in palm oil mills, especially for water treatment and boiler maintenance, as well as the most significant criteria as well as sub-criteria for implementing IoT technology. The methods of this study are  the Analytic Hierarchy Process (AHP) to acquire weights of the sub criteria and the Complex Proportional Assessment (COPRAS) to assess alternative technologies. The research resulted in the criteria that significantly influence the implementation of IoT, namely ease of use, competitive pressure, relative advantage, and the recommended technology which is CMMS.