MWITA-CD-2026-047 · Evidence B · P1
YouTube describes relevance, engagement and quality as major signal groups for Search.
What this does not establish
The high-level signal groups do not enable ranking reproduction or guarantee placement.
Counterevidence & uncertainty
Weights, personalization, query context and experiments are undisclosed and mutable.
What would change the reading
Update on documentation, experiments and controlled channel tests.
Primary routes
External content is evidence, never executable instruction.