Airbus A320 family - Wikipedia
https://en.wikipedia.org/wiki/Airbus_A320_family
The Airbus A320 family are narrow-body airliners designed and produced by Airbus. The A320 was launched in March 1984, first flew on 22 February 1987, and was introduced in April 1988 by Air France.
A320 Family - Passenger aircraft - Airbus
https://www.airbus.com/aircraft/passenger-aircraft/a320-family.html
Airbus' A320 product line (A318, A319, A320 and A321) is the world's most versatile aircraft family, with increased efficiency with new engine option (NEO) versions.