Explanation
A web-to-case question is a solution that can automate the use of suggested articles to deflect customer's interaction with a support agent while still providing relevant answers to the customer. It allows customers to submit cases from a company's website and receive suggested articles based on their question before submitting the case. Verified References: :
https://help.salesforce.com/s/articleView?id=sf.knowledge_web_to_case_deflection.htm&type=5 :
https://help.salesforce.com/s/articleView?id=sf.knowledge_web_to_case_overview.htm&type=5