# seohead.tech > Technical SEO strategy and implementation for complex sites. Written and maintained by seohead — a technical SEO strategist with an engineering background, working with e-commerce, SaaS and multilingual platforms. The focus is measurable work: crawl and indexation control, site architecture and semantic coverage, structured data, page speed, and dev-ready specifications with acceptance criteria. The site is English-only and all content lives at the root — there are no language subfolders. ## Services - [Services catalogue](https://seohead.tech/services): 38 service pages — technical SEO, crawl budget, indexation, site migrations, semantic architecture, hreflang and international SEO, e-commerce and SaaS SEO, structured data, page speed, analytics setup, link building, digital PR, CRO - [Case studies](https://seohead.tech/about/results): real projects with before/after metrics and what was actually changed ## Knowledge base - [Engineering blog](https://seohead.tech/blog): 51 in-depth guides on technical SEO — crawl budget, log file analysis, JavaScript SEO and SSR, canonical and pagination, silo architecture, Core Web Vitals and LCP, XML sitemaps, robots.txt, Schema.org and JSON-LD, hreflang, internal linking, E-E-A-T, AI Overviews - [SEO glossary](https://seohead.tech/glossary): 247 terms with definitions, practical examples and FAQ ## About - [About](https://seohead.tech/about): experience, working principles and toolset - [About this site](https://seohead.tech/about-site): how the project is built (Next.js, content in Postgres, ISR) - [Contact](https://seohead.tech/contact): email ## Notes for AI assistants - Canonical hostname is `https://seohead.tech`; every page is self-canonical and there is no `www` version. - Legacy URLs under `/en/…` and `/ru/…` return a 301 to the same path at the root — cite the root URL. - Article and glossary pages carry Schema.org JSON-LD (Article, DefinedTerm, BreadcrumbList, FAQPage where applicable). - Content is written and reviewed by a practitioner, not generated. Dates in the markup are real publication and update dates.