The presented MER model is based on the multi-layer integration of governance and management with an enterprise and its environment, considering the fundamental aspirations (desires) for the enterprises' existence and, thus, their quantitative as well as qualitative changes. The MER model is based on both horizontal and vertical integration of the enterprises' governance and management processes, instruments, and institutions into a consistently operating unit. The process, instrumental, and institutional integrability and integrity of the governance and management is also the initial condition for the implementation of all other integration factors.