What specific elements do AI search systems consider when evaluating optimized content?

Hi everyone,
I’ve been experimenting with different content formats lately and trying to understand what exactly AI search systems look for when surfacing results. Beyond the usual SEO basics like headings and internal links, are there specific signals or patterns AI models prioritize—like factual consistency, depth, or semantic structure?
I recently came across some ideas around AIO optimization, which seems to focus on aligning content for LLMs, but would love to hear what others are noticing or testing in this space.