Network technologies and tools are now present in almost every part of our lives. We live and work among digital interfaces, and the creative process and the designer toolset are undergoing a shift. In my research I explore this post-digital world as a social and cultural context, I discuss the digital culture predicting it along with dataism as a data-centric ideology. In this setting, digital data can be a medium, a tool and the message at the same time. Designers not only use digital tools, they also create and develop them using their own design systems, where decisions are not about a single final product, but a matrix of potential outcomes is designed. Based on these, I seek to answer the question what challenges dataism and the ever-evolving digital technologies present to designers and what attitudes and tools designers need, for example in contemporary (broadly-defined) graphic design. I examine the areas and frontiers of this issue, but, with a focus on fluidity, my research is centred around identifying and potentially questioning the designers’ processes and concepts defined by this digital data-centric approach and digital technologies. I primarily do this through the review of relevant literature and through project analyses. I present case studies to address practical aspects, highlighting, for example, various data visualisation applications. I also discuss generative art, creative coding, data-driven art and post-digital culture.