기업 or 국가 채권의 원리금+쿠폰을 상환할 가능성 & 채권 자체의 안정성 등을 고려한 신용도를 평가하는 행위

Credit rating is an assessment of the borrower's creditworthiness in terms of debt and loans. A high credit rating indicates high possibility that the borrower will repay the entire loan without any issues. A low credit rating indicates that the borrower has had issues with paying back loans in the past and may have similar issues for future loans.