Languages of the Ottoman Empire
The Ottomans had three influential languages: Turkish, spoken by the majority of the people in Anatolia and by the majority of Muslims of the Balkans except in Albania, Bosnia, and various Aegean Sea islands; Persian, initially used by the educated in northern portions of the Ottoman Empire before being displaced by Ottoman Turkish; and Arabic, used in southern portions of the Ottoman Empire; Arabic was spoken mainly in Arabia, North Africa, Mesopotamia and the Levant. Throughout the vast Ottoman bureaucracy Ottoman Turkish language was the official language, a version of Turkish, albeit with a vast mixture of both Arabic and Persian grammar and vocabulary.
Lala (title)
The practice of lala was even older than the Ottoman Empire. During the Seljuk Empire, the experienced statesmen accompanying the princes were called Atabeg or Atabey ( a Turkish composite title meaning ancestor-lord). However, Seljuk Empire was highly feudalistic and atabeys frequently used their power for separatist policies whenever they felt a weakness in the central authority. (like Eldiguzids in Azerbaijan and Zengids) 
The Ottoman Empire, on the other hand was more centralist and almost no lala tried to follow a separatist policy.