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<h2>Why should you participate in a Projectathon?</h2>
<p>The Projectathon is a crucial step in the development, testing and deployment into production of the Once-Only Technical System components.</p>
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<li>An excellent opportunity to <strong>verify</strong> that your systems or solutions <strong>effectively comply</strong> with the appropriate specifications.</li>
<li><strong>Perform peer testing</strong> with real systems using real-world scenarios and <strong>detect errors</strong> as soon as possible to reduce the cost of implementing and re-testing a fix.</li>
<li><strong>Meet relevant experts</strong> in the field to share and exchange views, experiences, and best practices.</li>
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<li>Your participation helps to <strong>improve and assess the proper functioning of the Technical Design Documents (TDDs)</strong> of the Once-Only Technical System.</li>
<li>You can also <strong>participate</strong> in a Projectathon <strong>as an observer</strong> and prepare yourself for the next Projectathon by getting in direct contact with active participants.</li>
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<p>Explore the valuable insights and reflections on Projectathon events and discover how Member States can benefit from participation before implementing the OOTS.</p>
<p class="p-cta"><a target="_blank" class="btn ghost" href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Projectathon5+gallery"><span>Go to Projectathon #5 highlights</span><span class="ico-cta-forward"></span></a></p>
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<h2>What can you expect at the Projectathon?</h2>
<p>You will perform a marathon of tests in a structured environment using the "Gazelle" platform, as well as participate in some exploratory sessions.</p>
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<h3 class="h5">Test</h3>
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<li><strong>Verify</strong> that your systems or solutions effectively comply with the <a target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Technical+Design+Documents">Technical Design Documents</a> of Once-Only, with the support teams from the European Commission.</li>
<li>Perform <strong>Peer-to-Peer</strong> testing with real or almost real systems using real-world scenarios end-to-end.</li>
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<h3 class="h5">Explore</h3>
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<li>Participate on the <strong>Exploratory sessions</strong> to discuss and learn more about <strong>specific topics about Once-Only</strong> from evidence mapping to eIDAS.</li>
<li>Watch the <strong>Demos</strong> by Member States of their own Once-Only project in collaboration with neighbouring countries.</li>
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<h2>Who will you be working with?</h2>
<p>The preparation of the Once-Only Technical System (OOTS) Projectathons requires the combined effort and input of a diverse and evolving set of contributors:</p>
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<h3 class="h5">European Commission and<br> Projectathon experts</h3>
<p>Organising team, Test session managers, Test module designer.</p>
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<p>Observers, Active participants including System under test operators and other participants.</p>
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<h4><span class="subtitle">Projectathon Playbook</span>Want to learn more?</h4>
<p class="p-opacity">Explore the Projectathon Playbook for a detailed overview of the Projectathon events organisation, teams and how to participate.</p>
<p><a class="btn primary-negative" href="https://ec.europa.eu/digital-building-blocks/sites/download/attachments/645595199/Once-Only_Technical_System_Projectathon_Playbook_v6.00.pdf" onclick="_paq.push(['trackEvent','conversion','oots-p6-playbook','button-download-p6-playbook-projectathon-landing-page'])"><span>Download the Projectathon Playbook</span><span class="ico-download"></span></a></p>


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<a class="secondary-download " href="https://ec.europa.eu/digital-building-blocks/sites/download/attachments/645595199/Once-Only_Technical_System_Projectathon_Playbook_Appendix_Gazelle_SUT_capabilities_v6.00.pdf" onclick="_paq.push(['trackEvent','conversion','oots-p6-appendix','button-download-p6-appendix-projectathon-landing-page'])"><span>Download Appendix: Gazelle SUT capabilities</span></a>
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<a class="secondary-download" href="https://ec.europa.eu/digital-building-blocks/sites/download/attachments/645595199/Once-Only_Technical_System_Projectathon_Playbook_Annex2_How_to_do_pre_tests_in_Gazelle_V6.00.pdf" onclick="_paq.push(['trackEvent','conversion','oots-p6-annex2','button-download-p6-annex2-projectathon-landing-page'])"><span>Annex 2: how to do pre-tests in Gazelle</span></a>
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<a class="secondary-download" href="https://ec.europa.eu/digital-building-blocks/sites/download/attachments/645595199/Once-Only_Technical_System_Projectathon_Playbook_Annex3_How_to_do_peer_to_peer_tests_in_Gazelle_during_the_Projectathon_V6.00.pdf" onclick="_paq.push(['trackEvent','conversion','oots-p6-annex3','button-download-p6-annex3-projectathon-landing-page'])"><span>Annex 3: how to do peer-to-peer tests in Gazelle during Projectathon</span></a>
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<h2>Upcoming & past Projectathons</h2>
<p class="mb-0">Since 2023, the Commission has been organising Once-Only Technical System Projectathons. These are three-day events where national teams connect various systems and perform a marathon of peer-to-peer interoperability and compliance tests in a structured environment.</p>

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<h3>Projectathon #6</h3> 
<p>The June 2025 Projectathon will support Member States that are (nearly) production-ready to enable end-to-end transactions, while assisting those catching up to enhance their technical readiness or retest the updates to their systems. This Projectathon will also support the onboarding of competent authorities, in particular those in the population, education and business domains as well as those interested in testing and/or close to going live.</p>
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<p class="card-upcoming-date">11 - 12 June, 2025 | Brussels</p>
<p><a class="btn ghost" href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Projectathon6" onclick="_paq.push(['trackEvent','conversion','oots-event-projectathon-6','button-read-more-home-page'])"><span>Go to Projectathon #6</span><span class="ico-cta-forward"></span></a></p>
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<h3>Projectathon #5</h3> 
<p>The November 2024 Projectathon was a thematic event with a focus on Vehicle Registries and Business-related procedures, targeting this specific set of Competent Authorities.</p>
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<p class="card-upcoming-date">20 - 22 November, 2024 | Brussels</p>
<p><a class="btn ghost" href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Projectathon5" onclick="_paq.push(['trackEvent','conversion','oots-event-projectathon-5','button-read-more-projectathon-landing-page'])"><span>Go to Projectathon #5</span><span class="ico-cta-forward"></span></a></p>
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<h2>Participants insights</h2>
<p>Explore valuable insights and reflections on past Projectathon events.</p>

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<p class="quote-sentence">“The value of this event is immeasurable. I already saw this value at the last Projectathon […] and it was a very difficult road to nationally make the office management aware of hiring a team for this Projectathon. But after we managed to come to the #2 Projectathon in larger numbers and successfully completed most of the tests, the transfer of information […] will be much easier to integrate into the management and I believe that we have opened new national perspectives"</p>
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<p class="quote-sentence">“Thank you for organising such a wonderful event! We were very happy to participate again and learned a lot. Heading home with lots of homework... :)"</p>
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<p class="quote-sentence">“Paving the road for the European Interoperability! Another successful projectathon of the technical system for the cross-border data exchange. The Once Only Technical System (OOTS) will connect public authorities across the EU, so they can exchange official documents and data at the citizen's request. Great team Portugal!!!”</p>
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<p class="quote-author">Portugal (LinkedIn)</p> 
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