Overview of nucleon spin structure

Understanding the spin structure of the nucleon in terms of its constituents is one of the most intriguing quests in nuclear physics. The nucleons are a complex and dynamics system of quarks and gluons. Over time, it became evident that one needs to go beyond the collinear description and use the multi-dimensional imaging in order to fully understand the origin of the nucleon spin and its structure. It lead to many experimental efforts and advanced theoretical developments. In this talk, I will present an overview of the recent progress in nucleon spin structure studies.