Context
Google introduced a conversational assistant designed for ongoing two-way dialogue and task completion.
What changed
Users increasingly received a single conversational answer instead of navigating a list of links.
Why it matters
Voice and assistant interfaces strengthened the need to become the selected answer, a core idea later associated with AEO.
Visibility OS interpretation
This milestone expands answer optimization beyond visual SERPs into conversational interfaces.
What remains uncertain
No event-specific uncertainty note is recorded yet. This record may change as new evidence is reviewed.