Moody's is best known for its credit ratings business, assigning the letter-grade ratings that help bond investors judge the risk of corporate and government debt, operating as one of just three major global ratings agencies alongside S&P Global and Fitch. Beyond ratings, the company has built Moody's Analytics, a data and risk management software business serving banks, insurers and asset managers, growing this segment substantially through acquisitions over the past decade. Ratings revenue is closely tied to bond issuance volumes, which rise when companies and governments are borrowing more and slow when issuance activity cools, making that side of the business somewhat cyclical despite the durable position ratings agencies hold. Moody's Analytics provides a steadier, subscription-based counterweight to the more volatile ratings business, and the company has increasingly emphasized this segment as a source of more predictable growth.