Search Experience Optimization (SXO) is what you get when you stop treating SEO and conversion-rate optimization as separate disciplines and design pages for both at once. SEO traditionally focused on getting the click; CRO focused on what happened after it. SXO treats the click and the experience after it as one continuous job, on the reasonable assumption that search engines now reward pages whose visitors stay, scroll, and act.
The shift matters because the signals search engines use to rank pages have moved closer to the signals that predict conversion. Dwell time, scroll depth, return visits, and pogo-sticking back to the search results are all things modern search systems can observe, and they correlate with the same things a CRO practitioner watches. A page that ranks but doesn't convert is also, increasingly, a page that won't keep ranking.
I run SXO work as a single audit with two passes. The first pass is the traditional SEO check — title, headings, schema, internal linking, page speed, mobile rendering. The second pass is a CRO walkthrough of the same page — what's the value proposition above the fold, how clear is the next step, where does the eye go, where does the visitor get stuck. The two passes find different problems on the same pages, and fixing both at once compounds.
The practical implication for clients is that ranking-only and conversion-only briefs both tend to under-deliver. A page built for SEO that converts at 0.5% leaves money on the table; a page built for CRO that nobody finds isn't a marketing asset. The pages that earn their keep are designed for both jobs from the start.