Meta Description is an HTML summary that can influence how a page is described in search results and whether searchers click.
It matters because organic search compounds over time when pages are technically accessible, useful, differentiated, and connected to real search intent. Clear SEO terminology also helps teams avoid shortcuts that create long-term risk.
Example
A description can summarize a guide’s actual comparison criteria and help a searcher decide whether to open it. Search engines may choose a different snippet, so the description is a suggested summary rather than guaranteed display text.