Building a clean government in Indonesia and the Southeast Asian region leaves serious work for every government regime, except for the Singapore government and perhaps Brunei Darussalam. This study aims to identify the role of Integrated Management Information System (IMIS) as a powerful tool in eradicating and preventing corruption, and its implications for governance and sustainable economic development. In-depth data on the Corruption Perception Index (CPI) for Southeast Asian countries and the current phenomenon of corruption disclosure in Indonesia. The study's findings suggest the rationale for using an IMIS instrument synergized between government institutions and business entities. Interior rationality includes agency theory, business experience, principles of good governance, technical processes and structures. The instrument's effectiveness is demonstrated when used in conjunction with testing and auditing by authorized departments, both within government institutions and corporations or business entities. The novelty of this study lies in the concept of synergy in order to strengthen the creation of inclusive good governance. This issue is relevant and has implications for public management practices and corporate management or other business entities that carry out project and development management, both by national and regional governments in Indonesia, including it is highly relevant to management control practices and their enforcement. It is important to pay attention to the direct implications for economic development in the Association of Southeast Asian Nations (ASEAN) countries are growth, and indirectly for the welfare of society by increasing the Human Development Index (HDI) related to Foreign Direct Investment (FDI).