SBA Communications is a holding company. Through its subsidiaries, Co. is an owner and operator of wireless communications infrastructure, including tower structures, rooftops, and other structures that support antennas used for wireless communications. Co.'s operations are in the U.S. and its territories. In its site leasing business, Co. leases antenna space to wireless service providers on towers that Co. owns or operates and manages rooftop and tower sites for property owners under various contractual arrangements. In its site development business, Co. assists wireless service providers in developing and maintaining their own wireless service networks.