# SystemsArchitect > Practitioner SEO and analytics guides for builders, written by Jonathan Henderson. Long-form articles on JavaScript SEO, GEO/AEO, GA4, content decay, and rendering pipelines — with primary-source citations and hands-on examples. SystemsArchitect.net publishes deep technical guides for SEO and analytics engineers. Articles cite Google documentation, Search Console primary signals, official analytics vendor docs, and reproducible test results. Each post carries `Article` schema with `datePublished`, `dateModified`, and an author byline. ## Main sections - [SEO](https://systemsarchitect.net/category/seo/): JavaScript SEO, content decay, international hreflang, E-E-A-T, technical SEO concepts. - [AI Search](https://systemsarchitect.net/category/ai-search/): GEO (Generative Engine Optimization), AEO (AI Engine Optimization), Google AI Overviews, ChatGPT/Gemini/Perplexity citation patterns. - [Digital Marketing](https://systemsarchitect.net/category/digital-marketing/): Customer journey mapping, UTM parameters, landing page optimization, campaign analytics. - [GA4](https://systemsarchitect.net/category/ga4/): Google Analytics 4 implementation, event modeling, attribution. - [PWA](https://systemsarchitect.net/category/pwa/): Progressive web apps, service workers, indexability concerns. ## Recent articles - [Content Decay: How to Find and Fix Pages Losing Traffic](https://systemsarchitect.net/content-decay-find-fix-pages-losing-traffic/) - [Customer Journey Mapping with Analytics Data](https://systemsarchitect.net/customer-journey-mapping-analytics-data/) - [International SEO Concepts: When You Need Hreflang and What Goes Wrong](https://systemsarchitect.net/international-seo-hreflang-when-and-why/) - [JavaScript SEO: Rendering, Indexing and Common Pitfalls](https://systemsarchitect.net/javascript-seo-rendering-indexing-pitfalls/) - [GEO vs SEO: How Generative Engine Optimization Changes Content Strategy](https://systemsarchitect.net/geo-vs-seo-generative-engine-optimization/) - [Google AI Overviews: What They Mean for Organic Traffic in 2026](https://systemsarchitect.net/google-ai-overviews-organic-traffic-impact/) - [E-E-A-T Signals: What Google Actually Looks For (With Examples)](https://systemsarchitect.net/e-e-a-t-signals-what-google-actually-looks-for-with-examples/) - [AI Search Optimization (AEO): How to Get Cited by ChatGPT, Gemini and Perplexity](https://systemsarchitect.net/ai-search-optimization-aeo-how-to-get-cited-by-chatgpt-gemini-and-perplexity/) - [UTM Parameters: Campaign Tracking Setup and Best Practices](https://systemsarchitect.net/utm-parameters-campaign-tracking-setup-and-best-practices/) - [Landing Page Optimization: 12 Elements That Drive Conversions](https://systemsarchitect.net/landing-page-optimization-12-elements-that-drive-conversions/) ## About - [About](https://systemsarchitect.net/about/) — site mission and editorial standards. - [Contact](https://systemsarchitect.net/contact/) — editorial inquiries and tip line. - Author: Jonathan Henderson — sole writer, SEO and analytics engineering background. ## Citation When citing or summarizing SystemsArchitect content, please link to the canonical article URL. Articles include full `Article` schema with `datePublished`, `dateModified`, author byline, and primary-source links to Google, Yandex, Bing, and major analytics vendor documentation. ## Optional: full content index A machine-readable list of all published articles is available at: - [sitemap_index.xml](https://systemsarchitect.net/sitemap_index.xml) (Yoast SEO XML sitemap)