TOEFL stands for (Test of English as a Foreign Language). It is a standardized academic English test and is usually used as a evidence of English ability. It is designed and administered by Educational Testing Service (ETS), an assessment organization based in New Jersey, US.
Initially, TOEFL was only taken by students applying to universities in the US and other English-speaking universities outside the US. However, recently, TOEFL has also been used to apply for jobs or scholarships, even in non-English-speaking countries. Hence, this test is getting more popular, and the demand for this test has risen significantly.

What do we do in TOEFL?
There are two main formats for TOEFL.
The more widely accepted and more popular between the two is TOEFL iBT (Internet-based Test).
The other one, which is older and only available and accepted in certain countries is TOEFL PBT (Paper-based Test).