This guide is part of Master technical SEO for a website. It focuses on practical decisions that make public pages easier to discover, interpret and maintain without pretending that a technical setting can guarantee visibility.
Structured data must match visible content
JSON-LD gives machines an explicit description of entities and relationships. Choose a Schema.org type that really matches the page, include only properties you can support, and keep markup synchronized with visible content. Valid syntax does not guarantee a rich result.
Why technical SEO matters
Technical SEO removes unnecessary ambiguity between a site and a search engine. It helps crawlers discover durable URLs, understand which version is canonical and interpret the page consistently. It does not guarantee a ranking: useful content, intent and site context still matter.
Crawling, indexing and ranking
Crawling is discovery and retrieval. Indexing is the decision to understand and retain a document. Ranking is the selection of indexed documents for a query. Diagnose these stages separately: a ranking problem is not automatically a crawl problem.
Keep signals coherent
The URL, canonical, title, robots directives, structured data and internal links should describe the same page. Contradictory signals force search engines to resolve conflicts. Prefer one stable public URL and link to it consistently.