General
The Azerbaijani(阿塞拜疆语) language, also called Azeri, Azari, Azeri Turkish, or Azerbaijani Turkish, is the official language of the Republic of Azerbaijan.
It is called Azərbaycan dili in Azerbaijani. Iranian Azerbaijanis often call it Türki. Some dialects of the language are spoken in many parts of Iran, most notably in Iranian Azerbaijan, where it is the most dominant language and lingua franca. Iran is home to the majority of Azeri speakers in the world. The language is also spoken in Russia's Republic of Dagestan, south-eastern Georgia, northern Iraq, and eastern Turkey.There are approximately 23 to 30 million native Azerbaijani speakers (circa 16 to 23 million in Iran, 8 million in the Azerbaijan Republic, and 800,000 in other smaller communities according to Ethnologue). It is a Turkic language of the Oghuz branch, closely related to Turkish and also historically influenced by Persian and Arabic.n addition, Azerbaijani is mutually intelligible with other Oghuz languages, which include the Turkish language as it is spoken in Turkey, the Caucasus, Cyprus, the Balkans, Iraq, Syria, and Western Europe, as well as the Turkmen language.
External Links:
All infirmation above is from wikipedia: http://en.wikipedia.org/wiki/Azerbaijani_language
