Scrum of Scrums
A cross-team coordination event for Scrum Masters; renamed "Coach Sync" in SAFe 6.0.
Predates formal scaling frameworks and is still widely used colloquially. SAFe renamed it to "Coach Sync" in 6.0 to emphasize that it's about removing impediments and aligning coaching, not reporting status — facilitated there by the RTE. LeSS uses ad-hoc cross-team coordination instead; Nexus folds the same need into the Nexus Daily Scrum.
Across the Frameworks
Scrum
InformalScrum of Scrums
Common in multi-team Scrum implementations.
SAFe
RenamedCoach Sync
Successor to Scrum of Scrums in SAFe 6.0; facilitated by the RTE.
LeSS
InformalUsed ad-hoc; not a formal event.
Nexus
Functional EquivalentNexus Daily Scrum
Related Terms
Present in Scrum, SAFe, LeSS, Nexus.