Discover practical insights on AI SEO, AI Search, Generative Engine Optimization (GEO), Answer Engine Optimization (AEO), Technical SEO, content strategy, and search marketing. Plain Intelligence publishes research-driven guides, tutorials, industry updates, and actionable frameworks to help marketers, SEO professionals, founders, and businesses improve visibility across Google Search, ChatGPT, Gemini, Perplexity, Bing Copilot, and emerging AI search platforms.
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Every guide, checklist, and case study — newest first, 10 per page.
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SEO KPIs That Matter
The SEO KPIs that matter in 2026 — which metrics predict organic growth and revenue, which are vanity numbers, and how to measure AI visibility alongside traditional rankings.
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Enterprise SEO
Enterprise SEO for 2026 — how to scale technical and content SEO across huge sites, win cross-team buy-in, automate governance, and manage the complexity that breaks smaller playbooks.
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E-commerce SEO
E-commerce SEO for 2026 — how to optimize category and product pages, handle faceted navigation and duplicates, add product schema, and win both search and AI shopping recommendations.
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Local SEO Strategies
Local SEO strategies for 2026 — how to optimize your Google Business Profile, build citations and reviews, and rank in the map pack and local AI answers for nearby searches.
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International SEO
International SEO for 2026 — how to structure multi-region sites, implement hreflang correctly, choose domains, and avoid the duplicate and targeting mistakes that sink global rankings.
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Mobile SEO Guide
A 2026 mobile SEO guide — how mobile-first indexing works, what Google grades on your mobile site, and how to fix speed, usability, and parity issues that cost mobile rankings.
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Image SEO in 2026
Image SEO in 2026 — how to optimize alt text, file formats, sizing, and structured data so images rank, load fast, and are understood by visual search and multimodal AI.
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SEO Audits Step-by-Step
A step-by-step SEO audit for 2026 — how to check indexing, technical health, on-page quality, content, links, and AI visibility, then turn findings into a prioritised action plan.
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Indexing Best Practices
Indexing best practices for 2026 — how Google decides what to index, why pages get excluded, and how to diagnose and fix crawling, quality, and duplicate issues that keep pages out.
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Canonical Tags Explained
Canonical tags explained for 2026 — what rel=canonical does, when to use it, common mistakes that waste crawl budget, and how canonicalization protects rankings from duplicate content.
What each pillar covers
- AI SEO — how AI search engines and assistants rank, cite, and surface content, from ChatGPT search to Google AI Mode, plus AI search analytics.
- GEO / AEO — Generative Engine Optimization and Answer Engine Optimization: entity SEO, retrieval optimization, and earning AI citations.
- SEO Fundamentals — keyword research, on-page SEO, internal linking, Core Web Vitals, schema markup, and topical authority.
- Technical SEO — crawlability, indexing, robots.txt, XML sitemaps, structured data, site architecture, and migrations.
- Content Strategy — content clusters, editorial calendars, evergreen content, AI content creation, and measuring content ROI.
- Future of Search — voice, visual, and multimodal search, AI agents, personalization, and zero-click search trends.
- Research & Data — original SEO experiments, AI citation studies, core update analyses, and repeatable case-study methods.
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