User intent or query intent is the identification and categorization of what a user online intended or wanted when they typed their search terms into an online web search engine for the purpose of search engine optimization or conversion rate optimization. As an Example, the goal of a user, can be fact-checking, comparison shopping or filling downtime.
Though there are various ways of classifying or naming the categories of the different types of user intent, overall they seem to follow the same clusters. In general and up until the rise and explosion of mobile search, there are and were three very broad categories: informational, transactional, and navigational. However over time and with the rise of mobile search, other categories have appeared or categories have segmented into more specific categorization. 
- Jansen, Jim (July 2011). Understanding Sponsored Search: Core Elements of Keyword Advertising. New York, NY, USA: Cambridge University Press. p. 44. ISBN 9781107011977.
- "The Rise of Mobile Search: From 2012 to 2015". Texo Design. Texo Design. Retrieved 26 December 2016.
- Broder, Andrei (Fall 2002). "A Taxonomy of Web Search" (PDF). SIGIR Forum. 36 (2): 5–6. Retrieved 27 December 2016.
- KhudaBukhsh, Ashiqur; Bennett, Paul; White, Ryen (2015). "Building Effective Query Classifiers: A Case Study in Self-harm Intent Detection" (PDF). CIKM '15 Proceedings of the 24th ACM International on Conference on Information and Knowledge Management: 1735–1738. Retrieved 26 December 2016.
- Search Quality Evaluator Guidelines (PDF). Google. 28 March 2016. pp. 61–74. Retrieved 26 December 2016.