Modeling of critical success or failure factors in business creationThe main objective of this thesis is to analyze the success or failure in the creation of companies through systems engineering tools that allow a better understanding of the dynamics and complexity of the subject.Initially a systematic literature review is carried out specifically on the critical factors of success or failure, then business success and failure are defined, as well as all the indicators used to make measurements of this. Later the different theoretical models found in the study are discussed. literature, then a general framework is proposed to classify all the factors identified according to the unit of analysis (entrepreneur, company and stakeholders). Later on, a general model of critical success or failure factors (CSFF) is designed and a sub-model is in turn built to evaluate with system dynamics the impact that the entrepreneur's experience has on the success in the creation of companies measured by based on the indicators of growth in sales, profitability and generated surpluses.Finally, it is concluded that the entrepreneur's previous experience is an accelerator of business behavior, helping to achieve optimal sales levels faster, a substantial reduction in costs and obtain better competitive positions in the market.