In a content-rich environment, sharing across platforms like YouTube and X.com (Twitter) can be streamlined using FusionAuth's Identity Provider Links, which simplify user authentication and API access across multiple platforms through a single account. This integration allows for a seamless video upload experience by linking a FusionAuth account to multiple social identities, leveraging access and refresh tokens to maintain security. Users can log in once to access different platforms, enabling single sign-on, token management, and cross-platform publishing. The process involves configuring identity providers like Google and X.com, setting up OAuth credentials, and creating a Node.js application with Fastify to handle video uploads and user authentication. By using Identity Provider Links, applications can unify content publishing workflows, enhance user experience, and potentially introduce features like consolidated analytics and synchronized moderation. The example application, which is available on GitHub, demonstrates these concepts, showcasing how developers can implement similar functionalities in their projects.