The choice turns on the size of the dispute, the countries the parties are in, the language of the contract and what you expect it to cost. The ICC offers global recognition and a deep body of practice. The DIS has a practical advantage in relationships with a German connection, in language and in legal culture. ISTAC can suit disputes centred on Türkiye, for proximity, language and cost.
Awards from all three are enforceable under the International Arbitration Law (No. 4686) and the New York Convention, so enforceability is rarely what separates them. What does is the detail: compare the fee schedule, the procedure for appointing arbitrators, and the average time each institution takes to reach an award. We settle the institution and its rules with you at the contract stage, while the choice is still free.
Shall we apply this matter to your situation?
Tell us your specific situation in a few sentences; we'll assess it with the right team.