The success of the post-deal phase relies on institutionalising the newly established ways of working throughout the integrated organisation. This entails integrating processes, systems, and cultures to create a unified and efficient operating model. To achieve this, organisations must first define a target operating model and establish a robust governance structure. Furthermore, a comprehensive change management strategy needs to be created for addressing organisational design, performance management, and talent development. Cultivating a common culture and instilling a shared purpose across the integrated entity are also critical elements of institutionalisation.