Iyzico, the Turkish fintech startup to let e-commerce sites and other apps easily accept online payments, has closed $15 million in a Series C round, $12 million of which was announced earlier this year.

Joining the round is London-based VC Amadeus Capital Partners, investing $3 million, while the first closing of Iyzico’s Series C was led by Vostok Emerging Finance, with participation from previous investors, International Finance Corporation (the World Bank’s investing arm), and Istanbul-based VC 212.

Sometimes dubbed the ‘Stripe of Turkey’, in reference to the widely popular San Francisco-based payments…