With the progress of 5G standardization scholars speculate about what the sixth generation will bring. The incorporation of sensor technology is developing as a significant component of the sixth-generation Radio Access Network, enabling for the construction of an intelligent network using dense cell infrastructures. The study presents a thorough examination of the history, variety of major uses, and cutting-edge techniques of Integrated Sensing and Communications (ISAC). The paper begins by examining the historical interaction of sensing and communication, followed by an examination of the many components of ISAC as well as the ensuing improvements in performance. The authors provide insight into ISAC's advancements in industry and standardization operations by providing both present and anticipated case studies.