This study aims to determine the effect of suppliers, internal and customer integration on the supply chain performance moderated by the demand uncertainty at PT XYZ. This study uses quantitative research methods to collect data using questionnaires with a sample number of 38 using saturated sampling techniques. Data analysis with SEM-PLS with WarpPLS 6.0 software. The results of this research are suppliers of integration that directly influence the performance of the supply chain, in addition to the integration of suppliers and customers that influence the performance of the supply chain, measured against the demand uncertainty. The results of this survey indicate that managers need to improve the integration of suppliers and customers to improve the performance of the supply chain.