Search Activity Gaps is a Knowledge dashboard that a consultant should use to know where to focus its efforts next after implementing Knowledge Centered Support. Search Activity Gaps shows the number of searches that returned no results, no articles, or no clicked articles. This can help identify the topics or keywords that need more or better articles to satisfy customer needs. Verified References: : https://help.
salesforce.com/s/articleView?id=sf.knowledge_dashboard_search_activity_gaps.htm&type=5 : https://help.
salesforce.com/s/articleView?id=sf.knowledge_dashboard_overview.htm&type=5