What are Twitter Cards

They allow websites to generate copy and paste-able HTML markup to render a Tweet on any website.

They provide simple interfaces for most Twitter functionality.

They make it possible to display public timelines on your website with a single line of code.

They make it possible for you to attach media experiences to Tweets that link to your content.

Answer:
They make it possible for you to attach media experiences to Tweets that link to your content.

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