ECMA is an abbreviation used for European Computer Manufacturers Association. It is a standard organization based out of Switzerland which takes care of ES. ES11 (2020) is updated in June 2020 and its nomenclature is like that the year in which the update is released then the name will be a year plus one such as ES10 (2019).
In ECMA Script6 also called ES6 and ECMAScript 2015 various new features were added:
The features are listed below:
The let keyword
The const keyword
The Rest Parameters
The Spread Operator
The Object Destructuring Assignment
Default values for Function Parameters
The for…of Loop
It is a term that you will listen to many times but will find difficult to understand. I will tell you only the overview of this because manually you will not indulge in Babel but automatically things will take place by Babel.