More with less.
Large-Scale Scrum (LeSS), from Craig Larman and Bas Vodde, scales by keeping Scrum simple: several teams, but one of almost everything else.
One Product Owner
One Voice
One person owns priorities for the whole product.
One backlog
One Order
All teams pull from the same ordered list.
One Sprint
One Rhythm
Teams plan, review and deliver together.
One Done
One Standard
A shared Definition of Done for the whole product.
Source: LeSS Works: Introduction to LeSS ↗
One product. One backlog. Many teams.