Airbus’ TwoTwenty, its first real business jet

 https://leehamnews.com/2021/09/28/airbus-twotwenty-its-first-real-business-jet/ 

With the business jet based on A220-100, this changes. It's no longer a one-off production but a fully-fledged Bizjet like the Gulfstream 650/700 or Bombardier Global 6500/7500, produced in series and with a semi-custom modular interior.