Fitch Ratings is a major credit rating agency that evaluates bonds, companies, and other debt instruments. It's one of the “Big Three” global rating agencies, along with Moody's and S&P Global Ratings. Fitch's rating system ranks debt from high-quality investment grade to higher-risk junk status. Investors can use these ratings to understand whether borrowers will repay their debts. These ratings influence investment decisions, borrowing costs, and how investors manage risk and returns.