For questions concerning Azerbaijani language, a Turkic language very similar to Turkish spoken mostly in Azerbaijan and Northwestern regions of Iran.
Azərbaycan dili - Azerbaijani language is the official language of Azerbaijan with 9M speakers, one of the official languages of Dagestan, Russia with around 0,15M speakers, is the local language of Azerbaijanis in Iran with around 17M speakers and Azerbaijanis in Georgia with around 0,25M speakers.