Google SEO
Best practices — Google Search Central
How do you implement hreflang correctly?
Each page should reference all its language variants, including itself, with reciprocal hreflang links. Missing return links can prevent the annotations from working as intended.
Further analysis
Use this entry as an audit checkpoint. The cited source establishes the context; the direct answer identifies what to check before choosing an action.
In SFT, this topic relates to Structure. Check whether the signal is visible on the page, connected to the rest of the website and supported by understandable evidence.
Related search terms include hreflang, multilingual SEO. Use them to describe the issue in a brief, audit or answer page.
Applying SFT
Structure turns a rule into readable architecture: headings, URLs, structured data, visible content and clear hierarchy.