Wie Suchmaschinen Seiten finden und in den Index aufnehmen.
What sitemaps are for, what belongs in them and what doesn't, why lastmod must be honest and changefreq/priority are irrelevant. With limits and GSC diagnosis.
The deep mechanics of hreflang: three implementation methods, the return-tag principle, x-default, language-region codes, and the five most common errors.
How to set up multilingual sites so Google serves the right locale: URL structure, bidirectional hreflang, canonicals per language, x-default.
Server logs show what Googlebot really crawls — unlike Search Console. What is in them, how to verify real bots, and what to look for.
Why filter combinations burn crawl budget and cause index bloat — and which patterns from robots.txt, noindex and canonical bring it under control.
Which control signal acts in which phase — crawling, indexing, consolidating — and why Disallow plus noindex is the classic bug. With a decision tree.
How rel=canonical bundles duplicates onto a preferred URL, why it is only a hint, and how it differs from 301, noindex, and hreflang.
How crawl budget, robots, sitemap, JS rendering, indexing, canonical and Core Web Vitals fit together — the full arc for production sites.
What crawl budget is, when it actually matters — and which levers let large sites steer Googlebot's time toward the right URLs.