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Digital transformation is the name of a booming global market, that mas grown from millions of users until 1985, for the first platform or mainframe terminal, to hundreds of millions of users until 2010, for the second platform or the Lan/ Internet and client/ server, and therefrom to billions of users for the third platform, cloud, social, mobile and analytics (IDC, 2017). The market is expected to nearly double from 1.3 trillion USD in 2020 and therefrom 2.3 trillion USD sales in 2023 (IDC, 2019). The impact of digital transformation pervades across society, making analysts such as Organization for Economic Cooperation and Development (2020) or the World Economic Forum (2020a, 2020b) write about the digital transformation economy generated by the digital transformation market. Market reports show cloud technology emerging since 2008 and growing in the future (Statista, 2021b). Many digital transformation technologies have emerged in this decade, for instance, according to Gartner (2012, 2013, 2015, 2016, 2018, 2019, 2020). Internet of Things in 2012; big data in 2012; cloud computing in 2013; Internet of Things platform in 2015, 2016; digital twin in 2018; blockchain in 2018; artificial intelligence in 2019, 2020. Digital technology in terms of IDC’s third platform technology leads to digital transformation in all aspects of human society including business organizations. The market for digital technology is refered to by IDC as the market for digital transformation. It is not technology per se that is revolutionary, but its impact on all aspects of society including business organizations. Digital transformation is a predicted and constructed phenomenon by digital consultants, IT suppliers, articles in Harvard Business Review, books. Managing digital transformation is a key strategic topic and the realm of management consultants. Digital consultants have worked closely with organizations, have engaged in surveys and have use cases to refer to as basis for their advisory. Digital transformation use cases are scarce, and marketed by IDC (IDC, 2021). Harvard Analytics Services (2014, 2016, 2019, 2020a, 2020b) note use cases enable companies to make digital transformation decisions and predict return on investment. Laggards in digital transformation have issues understanding impact and are therefore challenged in their investment decisions. Digital transformation empirical studies are in 2021 opportune. Literature review shows digital transformation is accepted terminology in scientific journals, indexed Web of Science, Elsevier, other. Whereas consultants have worked closely with organizations worldwide throughout their digital transformation journeys since 2011, scientific journals have noted the phenomenon later on with fewer resources. The literature review section in this article focuses on digital consultants and scientific journals. Managing digital transformation introduces new management tools, proposed by both digital consultants and scientific journals alike. Transformation maturity scales are overviews of what is to be transformed, from the starting point to the final point. They show transformation dimensions, transformation maturity stages and the shape of each dimension at every stage of transformation. The how to transform is given by roadmaps, who define the main milestones and overarch transformation programs and projects. Transformation targeted states are digital enterprises and value creating networks. Scientific literature reviews about digital transformation (Nwaiwu, 2018) also show that the literature review is focused on the following: assess current state of digitalization; what to transform; how to transform; origin of theoretical framework, which may be business or academia; whether the framework is scientifically validated or not. The goal of this article is to create an instrumental overview approach to managing digital transformation, that takes into account literature review and the practice of a digital transformation expert, Siemens, advised by PWC.