The full form of IELTS is International English Language Testing System.
This test is designed to help you migrate to a country where the native language is English.
You may go to that country in order to study or to work.
These English-speaking countries may include Australia, USA, UK, New Zealand and Canada
Being able to communicate in the native language of the country you want to reside in is very important as it brings many opportunities, be it career or personal.