The ratings on Iron Mountain Inc. reflect the company's leading position as the world's largest records management company, solid revenue growth from existing customers and acquisitions, and some financial flexibility within the rating to accommodate moderate capital spending and acquisition activity. As an international, full-service provider of records and information management services, Iron Mountain provides services to more than 120,000 customer accounts, including more than half of the Fortune 500 companies, in 77 markets in the U.S. and 37 markets outside the U.S. The company was created by the February 2000, $1.2 billion all-stock merger between Iron Mountain and its closest competitor, Pierce Leahy Corp. The resulting entity enjoys a dominant market position and critical mass in less developed markets.