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Istanbul, Turkey

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Promena, Strategic Sourcing Platform and Services; is the technology brand of Zer (, which is central procurement company of Koç Group (, founded in 2003. Zer accelerates its growth by offering procurement experience to its both Koç and Non-Koç clients, which has been gained for more than 15 years. This growth is achieved through net gain and efficient procurement processes provided to clients.

Key customers: Arçelik A.Ş., Unilever Turkey, PepsiCo Turkey, Tüpraş and more than local and global 100 customers