Elisa Oyj engages in the provision of telecommunications, information and communications technology, and online services. It operates through the Consumer Customers and Corporate Customers segments. The Consumer Customers segment includes telecommunications and communications services, such as fixed and mobile subscriptions with supplementary digital services, cable-television subscriptions, Elisa Viihde entertainment service, and Elisa Kirja e-reading service. The Corporate Customers segment offers corporate and public administration organizations with services such as information technology (IT) and communication solutions for the digital environment as well as fixed and mobile subscriptions. The company was founded by Daniel Johannes Waden in 1882 and is headquartered in Helsinki, Finland.