American Tower, founded in 1995 and headquartered in Boston, Massachusetts, is one of the largest Real Estate Investment Trusts (REITs) in the world. The company owns, operates, and develops multitenant communications real estate - primarily cell towers and edge data centers - leasing space to wireless carriers and network operators who use these sites to deploy and expand their networks.
The company's portfolio spans over 171,000 communications sites across 22 countries, supporting mobile and broadband connectivity in both urban and rural locations. Its infrastructure solutions range from traditional tower assets to indoor and distributed wireless coverage systems, as well as modern edge data center capabilities.
As an independent, multitenant operator, American Tower serves as a shared-infrastructure provider: multiple carriers and operators can co-locate on the same site, making the model capital-efficient for tenants and central to how mobile networks are built and maintained globally. Its scale and geographic reach place it among the most significant players in telecommunications infrastructure worldwide.
