# SEO in 2026: Core Web Vitals and AI's Role
In 2026, ecommerce SEO and web performance teams face a rapidly evolving landscape. Today's updates highlight key shifts in Core Web Vitals, AI's expanding role in SEO, and changing audience dynamics. Staying informed on these developments is crucial to maintaining competitive edge.
Core Web Vitals: New Challenges and Opportunities
Google's John Mueller has highlighted a critical issue with customizable layouts affecting Largest Contentful Paint (LCP) measurements. This can lead to misidentifications of key elements, skewing performance metrics and potentially misleading optimization efforts [1]. Understanding how these layouts impact LCP is essential for accurate performance tracking.
Additionally, Google has ended cache-served AMP pages, directing searchers straight to domain-hosted AMP pages. This change simplifies user experience and aligns with Google's ongoing efforts to streamline web performance [4].
What this means for your stack: Audit your LCP elements regularly, especially if using customizable layouts, and review AMP implementation to align with Google's latest changes.
AI's Expanding Role in SEO
Cloudflare has introduced AI crawler rules, allowing sites to manage AI crawlers by categorizing them as Search, Agent, or Training. This includes the potential to block Googlebot if sites choose to block training crawlers [5]. Such controls can help sites protect data from being used in AI training without consent.
Reddit's significant SEO traffic highlights the platform's potential for SEO strategies. As a frequently-cited domain across AI platforms, leveraging Reddit effectively can enhance visibility and engagement [3].
What this means for your stack: Consider how AI crawler rules might affect your site's visibility and explore Reddit as a strategic SEO tool.
Audience Dynamics: A Shifting Landscape
Recent data suggests a decline in younger audience shares across platforms, with publishers facing challenges in retaining this demographic [6]. Understanding these shifts is crucial for tailoring content strategies to engage younger audiences effectively.
What this means for your stack: Reevaluate your content and engagement strategies to better attract and retain younger audiences, leveraging insights from current trends.
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Authored by the ControlVitals Editorial Team — performance and SEO practitioners auditing real production sites every day.
Editorial transparency: this article was researched and drafted with AI assistance, then reviewed by our editorial team for factual accuracy before publication.