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What Does an SEO Expert Do?

The honest 2026 breakdown of what an SEO expert actually does - the four program layers, the daily and weekly work, and where time gets spent.

Quick Answer

A 2026 SEO expert runs four program layers as one integrated workstream. (1) Technical SEO - Core Web Vitals optimization, schema markup rollout, crawl budget management, JavaScript rendering audits, site architecture, internal linking, indexation control. (2) Content strategy - topic cluster architecture, search intent mapping, pillar page construction, programmatic SEO where appropriate, content gap analysis. (3) Link earning - PR placements, podcast guest tours, original research, digital PR campaigns. (4) AI search optimization - GEO and AEO for ChatGPT, Perplexity, Claude, Gemini, and Google AI Overviews. Time splits roughly 30 percent strategy, 40 percent execution and operator management, 30 percent reporting.

Layer 1: Technical SEO

Core Web Vitals optimization (LCP, INP, CLS), schema markup rollout across all eligible page types, XML sitemap engineering, internal link architecture, JavaScript rendering audits (server-side vs client-side), indexation control via robots.txt and meta robots, crawl budget management for large sites, redirect strategy, hreflang for international sites.

Layer 2: Content Strategy

Topic cluster architecture (hub-and-spoke design), search intent mapping (informational vs commercial vs transactional vs navigational), pillar page construction, programmatic SEO where data supports it, content gap analysis against direct competitors, content briefs scoped to buyer journey stages, content scoring and quality control.

Layer 3: Link Earning

PR placements in trade publications, podcast guest tours, original research that earns citations, digital PR campaigns, broken-link reclamation, brand mention monitoring, citation building for local relevance. No private blog network rentals or sponsored links.

Layer 4: AI Search Optimization (GEO and AEO)

Optimization for citation in AI-generated answers across ChatGPT, Perplexity, Claude, Gemini, and Google AI Overviews. Definition-lead content patterns, statistical anchors, quotable passages, Wikidata entity setup, Crunchbase profile completeness, Schema.org Person markup, explicit AI crawler access via robots.txt and llms.txt.

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Written by Mark Gabrielli — SEO Expert and Fractional CMO, founder of MarkCMO. 32 ventures in production. 24,000 plus SEO-optimized pages on markcmo.com as live proof of the methodology. Contact: [email protected].