This is the 15266th most frequent Turkish word.
stratejisini
"Stratejisini" means "his/her/its strategy" in English.
Here, 'stratejisini' indicates the possessive form ('its strategy') in the accusative case, as it is the object of the verb 'değiştirdi' ('changed').
Şirket yeni ürünlerin tanıtımı için stratejisini değiştirdi.
The company changed its strategy for promoting new products.
In this sentence, 'stratejisini' is used to show possession ('its strategy') and is in the accusative case because it is the direct object of the verb 'uyguladı' ('implemented').
Basketbol takımı final maçında stratejisini başarıyla uyguladı.
The basketball team successfully implemented its strategy in the final game.
This use of 'stratejisini' refers to the possession of 'strategy' ('its strategy') within the frame of an accusative case indicating it as the direct object of 'uyarlamayı' ('to adapt').