Why Did Airbus Build The A321XLR With A New Cabin Architecture?

Airspace is Airbus‘ innovative cabin brand, which was launched in 2016. It was first delivered on the Airbus A330neo and A350, but is also being rolled out on the A320neo family. It was built around four main pillars: comfort, services, ambience, and design. The Airspace cabin offers more personal and storage space as well as contemporary lavatories and LED lighting, but why did Airbus build the Airbus A321XLR with a new cabin design?