Elisa Oyj is a Finnish telecommunications and digital services company founded in 1882 as the Helsinki Telephone Association. It has evolved from a telephone cooperative into a leading provider of mobile and fixed network subscriptions, broadband, and cable TV services under brands like Elisa and Elisa Saunalahti, primarily in Finland and Estonia. Elisa Oyj serves over 2.8 million consumer, corporate, and public administration customers, offering innovative digital solutions such as Elisa Viihde for entertainment, Elisa Automate for AI-driven network automation, and international software services in more than 100 countries. The company pioneered commercial GSM in 1991, the world's first UMTS900 network in 2007, and 5G launches in Finland and Estonia in 2018, with extensive coverage by 2022. Employing over 6,200 professionals across 35 countries, Elisa Oyj focuses on sustainable digitalization, ICT tools for productivity, and IoT applications like smart lighting infrastructure. With 2025 revenue of EUR 2.3 billion, it plays a pivotal role in Northern Europe's telecom sector, listed on Nasdaq Helsinki with about 180,000 shareholders.