The DALC, C1 advanced commercial language's diploma was introduced in 1995, while the DILC, B1 intermediate commercial language's diploma dates back 2002.
Since 2007 the AIL DILC - B1 Examination has been recognized by the UFFT (Swiss Federal Office for professional education and technology) as final Exam of Italian as a second national language for all the professional commercial schools of the Helvetic Confederation.