The product reviews update was a big update impacting review content (and felt like a baseline update for many impacted sites):In this article, I'll go into more detail on this topic, including what Google has explained over the years about the Rich Snippet Quality Threshold, Banner Design Service examples of what I've seen and shared over time, and then why this is important for site owners and SEOs to understand. Google on site quality thresholds and the impact of rich snippets: First, let's cover what Google has explained over the years about rich snippets, quality thresholds, and major algorithm updates.
It's not uncommon for Google's John Mueller to be asked about which sites are gaining or losing rich snippets after large core updates (or other major algorithm updates). It can be shocking to site owners to see these valuable snippets disappear from the SERPs, Banner Design Service or increase, during algorithm updates. Below, I'll provide several comments from Google's John and Gary Illyes on the impact of rich snippets. Again, it is very important to understand. Note that I've shared most of these clips over the years on Twitter or in my blog posts about major algorithm updates.
First, here's Google's John Mueller explaining that if you're seeing rich snippets dropping after a large major update (the May 2020 major update in this example), the issue could be site quality. If everything is correct with the technical setup to receive rich snippets (structured data), Google may simply not think the site is good enough to receive them. The segment starts at 44:01 in the video:John also explained in this video that if you're suddenly losing rich Banner Design Service snippets and you're not sure if it's a quality issue, you can run a site query as a test. If the technical setup is correct, Google will often display the rich snippets when you run a query on the site (even if you don't receive them in the actual search results).