The set of website infrastructure best practices — site speed, mobile-friendliness, indexability, schema, internal linking — that enable search engines and AI systems to crawl and understand a site.
Technical SEO is the foundation everything else stands on. If crawlers cannot reach a page, content quality is irrelevant. The 2026 priorities: HTTPS, mobile-first, Core Web Vitals (LCP, CLS, INP), clean URL structure, comprehensive schema, and fast TTFB.
A brand has great content but a 6-second Time to First Byte and no schema. Perplexity crawls them but rarely cites them — the slow TTFB causes crawl timeouts. After moving to a CDN and adding schema, crawl coverage doubles and citation rates follow within 30 days.
VibecodeAEO scans your site for all AEO factors weekly and tells you exactly what to fix.