American Tower owns and leases wireless communication towers that mobile carriers mount their antennas and equipment on, generating revenue from long-term lease agreements rather than operating a wireless network itself. Multiple carriers can lease space on the same tower, and each additional tenant added to an existing tower comes at a relatively low incremental cost, making tower ownership an attractive, high-margin business once a tower is built. The company operates as a real estate investment trust, distributing most of its taxable income to shareholders as dividends, with towers located across the United States and a growing international footprint in markets like India, Latin America and parts of Europe. American Tower's growth is tied to how much data traffic wireless networks carry, since more data usage drives carriers to add equipment and lease more tower space to expand network capacity.