Indonesian (Bahasa Indonesia) is the official language of Indonesia. Indonesian is a standardized dialect of the Malay language that was officially defined with the declaration of Indonesian independence in 1945, and the two languages remain quite similar.
The language is spoken fluently as a second language by most Indonesians, who use a regional language (examples are Minangkabau and Javanese) at home and in their local community. Most formal education, as well as nearly all national media and other communication, are in Indonesian.
The Indonesian name for the language is Bahasa Indonesia (literally language of Indonesia); this name is sometimes used in English as well.