As a major global process, digitalisation is a leading part of almost all aspects of our daily lives. Its impact is clearly felt in the social, economic, and educational sphere and our lifestyle as well. Our traditional world is increasingly converted into digital dimensions, where the process of knowledge acquisition can be significantly accelerated if we can harness the positive aspects of digitalisation. In order to understand how digitalisation can have such a profound impact on our daily lives and transform our world, it is important to briefly describe the main stages of development, the different interpretations of Industry 4.0, Industry 4.5 and digitalisation, and then illustrate the current situation with social and economic examples. We will also point out some important digitalisation-related metrics, referring to the importance of digital competences.