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Metadata that controls how a page preview appears when shared on social platforms.
Open Graph tags set preview title, description, image, and type. They matter for shareability, ads, messaging apps, and launch posts.
Plainly
Think of Open Graph as the checklist that keeps the app open for real people. Metadata that controls how a page preview appears when shared on social platforms.
In practice
Use it when a change has to survive deploys, users, incidents, analytics, or billing reality. In practice, define the owner, input, output, and failure mode before you rely on it.