Since 2017, ISIS as a radical organization has lost their central teritory of their governmental system, namely Iraq and Syria. In order to maintain the existence of the group, ISIS used a strategy of power decentralization to build new teritory in other regions outside of Iraq and Syria. This paper aims to explain the tactics used by ISIS in implementing the power decentralization strategy to radicalize individuals and the community outside Iraq and Syria, specifically in Indonesia as the bridge to their interest. The decentralization strategy of ISIS power is a phenomenon which is still being the cause of security issues of a country until now.