The anime medium has a long and complex history. Like any artistic medium, it is constantly growing and evolving, with creators building on what came before them and harnessing new technologies to push the medium in brave new directions. While hundreds of thousands of different shows and movies have been released over the years, each with its own strengths and weaknesses, in each decade, a handful of works stand out as the ones that defined that moment in time.
Source:https://www.cbr.com/decade-defining-anime/