This book "Integrated Model for Sound Internal Functioning and Sustainable Value Creation: A Solution for Corporate Environments Post Covid-19 Pandemic" is about business sustainability and ethical leadership, it provides insight about the best business practices of the International Integrated Reporting Council (IIRC). The IIRC practices view the environment, society, and the business world as inseparable. The message of this book is encouraged by various corporate failures, issues of global warming and financial crises including global pandemics like those of Covid-19. This book calls for the business world to be mindful of the impact of their business activities on the natural environment and society. It further reminds the current humankind or generation not to meet their current needs by compromising the ability of the future generation to meet theirs. A conceptual integrated model that is based on the IIRC practices is provided in this book for the business communities to guide how to conduct sound business practices in a manner that preserves the planet Earth and enhance societal well-being at the same time. This is also known as integrated approach that considers all factors that influence business activities and value creation process of corporations when decisions are made within business practices.