Technical SEO is the work that decides whether search engines can find, read and understand a site. Each article here starts from one specific issue met on a complicated website, such as links that stop pointing where they should or audit findings that never reach the people who could act on them, and explains the SEO problem behind it.
The service itself covers crawling, indexing, architecture, JavaScript, international SEO, migrations and large-site analysis. The guides alongside set out each area, using Google Search Central as the reference. Articles are written by Dean Cruddace, and where one relies on Google's documentation it links to the page it uses.