With roots that reach back to the 1960s, OYTEK is an OYAK subsidiary that ranks as one of the leading companies in Turkey's information technology sector. YADAŞ Bilgisayar ve Yazılım, a computer and software house that was acquired by OYAK along with Sümerbank in 2001, was combined with Oyak Bank's own IT groups. Restructured and given a new corporate identity and mission, it was reborn as OYAK Teknoloji, Bilişim ve Kart Hizmetleri AŞ (OYAK Technology, Informatics, and Card Services Inc) in March 2002.

Ever since then, OYTEK has been providing innovative, creative, and high added value products, services, and solutions to help its clients make the transition to the IT universe easy and trouble-free. Finance, construction, cement, foods, automotives, tourism, logistics, insurance… OYTEK provides the information technology solutions that companies need no matter what line of business they may be in. OYTEK serves both the public and private sectors as a systems integrator. The company supplies the market with card technologies and services, communications center infrastructure and technologies, turnkey delivery custom-designed projects, e-business and e-learning (distance learning) applications, enterprise resource planning (ERP) solutions, document management and workflow solutions, and customer relations management (CRM) as well as software, hardware, and network-related products, services, and solutions.

Strategic business partnerships with leading manufacturers and service providers in Turkey and around the world, investments in advanced technology, and a steadily growing team of specialist personnel all support OYTEK's customer-focused service approach.

OYTEK is Turkey's leading and preferred systems integrator.