This is the 14199th most frequent Turkish word.
müşterinin
"Of the customer" or "the customer's."
The word "müşterinin" serves as the possessive form of the word "müşteri" (customer), indicating ownership of "isteği" (request).
Müşterinin isteğiyle ürün değiştirildi.
At the customer's request, the product was exchanged.
"Müşterinin" here indicates that the opinions belong to the customer.
Mağaza çalışanları, müşterinin fikirlerini dikkatle dinledi.
The store employees listened carefully to the customer's opinions.
In this sentence, "müşterinin" shows possession, associating 'memnuniyeti' (satisfaction) to the 'müşteri' (customer).