Google Search Console is Google’s free platform for monitoring search visibility, indexing, performance, and technical issues.
It matters because technical issues can prevent great content from being discovered, rendered, indexed, or trusted. Strong technical foundations protect rankings during redesigns, migrations, content expansion, and platform changes.
Example
Search Console can report that a submitted URL is excluded from indexing and identify the selected canonical. Use that evidence to inspect the specific page; the report is a diagnostic starting point rather than proof that every excluded URL is an error.