This week’s central finding is that technical access and ordinary search eligibility remain foundations for AI discovery, while fetch, impression, citation, and referral are different events. New reporting is useful only when every metric has its own definition, period, and data source.
Google described dedicated reporting for AI Overviews and AI Mode. It helps observe impressions and clicks inside Google Search, but it does not reveal a ranking score, the complete source set, or a causal link between a page change and an answer appearance.
Perplexity documents PerplexityBot for search crawling and Perplexity-User for fetching a page in response to a user request. A matching User-Agent and official IP help classify the fetch, but neither role alone proves that the page appeared as a link in an answer.