The Greek philosopher Heraclitus once said that one constant since the beginning of time is change. Nothing in life is permanent, nor can it be, because the very nature of existence is change. The Dutch public sector deals with many changes in its environment. Changes follow one another at lightning speed. The Dutch public sector uses Enterprise Architecture to accompany change. In recent years, the environment placed new and increasingly compelling demands on the functioning of public organisations. A responsive and adaptive government is needed to deal with this. We must create public organisations that can cope with or even seize opportunities in a dynamic, complex, unpredictable environment. The Dutch public sector proposed to use antifragile to deal with disruptive change. However, how can the Dutch public sector achieve antifragility with the support of Enterprise Architecture? Hence, the research question of this thesis is: ’What are the success factors of Enterprise Architecture and antifragile that positively influence the contribution of Enterprise Architecture in achieving antifragility in the Dutch public sector?’ We can conclude that there are fourteen potential success factors. We used triangulation to determine these success factors. We performed literature research and used semi-structured interviews with four CxOs of the Dutch public sector for validation and data collection. An expert group of ten Dutch public sector enterprise architects validated the results. ; A thesis submitted in fulfilment of the requirements for the degree of Master of Enterprise IT Architecture (MSc)