Google SEO
April 2021 (subsequent iterations) — Google Search Central Blog
What did the Product Reviews Update target?
It targeted superficial product reviews and rewarded actual testing, original photos, quantified comparisons and demonstrable firsthand experience.
Further analysis
Use this entry as an audit checkpoint. The cited source establishes the context; the direct answer identifies what to check before choosing an action.
In SFT, this topic relates to Trust. Check whether the signal is visible on the page, connected to the rest of the website and supported by understandable evidence.
Related search terms include Product Reviews Update, review quality. Use them to describe the issue in a brief, audit or answer page.
Applying SFT
Trust requires observable evidence: sources, consistency, citations, identifiable authors and verifiable claims.