The process of deleting, no-indexing, merging, or improving low-quality URLs to improve overall site quality signals and remove pages Google has flagged as low-value.
"If it's not ranking, then I consider, okay, maybe we need to combine, to merge, uh, to prune. And if it is, uh, discovered not crawled, or especially if it's crawled, not indexed, that's where we're going to start to get really aggressive in terms..."