The meta description and the Open Graph (og:description) tag both summarize a page, but they serve different surfaces. The meta description is what search engines may show under your title in results. The OG description is what appears when someone shares your link on social platforms.
Teams often set one and forget the other. If you skip og:description, social platforms may fall back to your meta description - or scrape something worse. Controlling both means your page looks intentional everywhere it's seen.
