<h1><span class="d-block text-primary">The Once-Only hub.</span>Unlocking the full potential<span class="d-block not-d-block-mobile">of the Single Market.</span></h1>
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Welcome to the Once-Only Hub, a single environment providing reliable information, and services and relating to the Once-Only Technical System.
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The Once-Only Technical System lets EU public authorities securely exchange official documents and data at the request of citizens and businesses as part of cross-border administrative procedures, e.g., when registering an address or vehicle when moving abroad. This innovative system eliminates the complicated manual search, mapping, and fetching of data between Member State authorities, improving efficiency, making people's lives easier, and reducing the costs of mobility in the Single Market.
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