"On the Existence of Digital Objects" is an academic book that deals with the philosophical investigation of digital objects. These objects, which exist in the form of data, are ubiquitous in our daily lives, whether through online videos, images, or texts. Despite their prevalence, the nature of digital objects often remains unclear. The author, Yuk Hui, engages in a dialogue between the philosophers Martin Heidegger and Gilbert Simondon to explore the existence and understanding of digital objects. By analyzing the history of ontology and markup languages, Hui examines the existential structure of digital objects and their relationship to technical systems. The book offers an interdisciplinary perspective that combines philosophical and technical insights, addressing themes such as alienation and the relationship between technology and culture. It is a profound exploration of the data and metadata that shape our modern world.