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<p><a class="link-cta primary before" href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Projectathons"><span>Back to projectathons</span></a></p>
<h1>Projectathon #1</h1>
<p class="lead">A marathon of peer-to-peer interoperability and compliance tests in a structured environment.</p>
<p><span class="badge neutral">Past event</span></p>
<p class="information-illu"><img aria-hidden="true" alt="" src="https://ec.europa.eu/digital-building-blocks/sites/download/attachments/647954663/illu-introduction-projectathon-01-2024.jpg"></p>

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<h2>Once-Only Technical System Projectathon #1 Insights</h2>

<p>From 19-21 April 2023, the first Once-Only Technical System (OOTS) <a href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Projectathon1" target="_blank">Projectathon</a> brought together 25 EU Member States in Brussels in a marathon of peer-to-peer interoperability testing. A Projectathon is a crucial step in the development, testing and deployment into production of the Once-Only Technical System components that underpin a national Once-Only implementation.</p>

<p>Once-Only will help to ease administrative burden on companies, with resource savings even greater for smaller companies with more limited resources.</p>

<p>It will also have great benefits for European citizens. The Once-Only Technical System means that when completing an online procedure, citizens will be able to give their explicit request to retrieve evidence from a competent authority in another Member State. This explicit request triggers the retrieval of evidence from competent authorities across many different sectors through the Once-Only Technical System (education, vehicles, population registers and more).</p>

<p>This Projectathon provided EU countries with an excellent opportunity to verify that their national Once-Only systems or solutions effectively comply with the appropriate specifications, laid out in the Once-Only Technical System <a href="https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=uriserv%3AOJ.L_.2022.231.01.0001.01.ENG&toc=OJ%3AL%3A2022%3A231%3ATOC" target="_blank">Implementing Regulation</a> and <a href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Technical+Design+Documents" target="_blank">Technical Design Documents</a>.</p>

<p>Neutral experts, acting as Monitors, supervised and verified the tests over the three days. The Once-Only Technical System Projectathons are not pass/fail type examinations. Rather, they are a collaborative exercise in understanding technical and operational issues and working together to solve them.</p>

<p>Ahead of the December 2023 legal deadline to implement the Once-Only Technical System, the European Commission is organising two more Projectathons, allowing the participating teams to build on their experiences.</p>

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<h3 class="h5">Projectathon #1 Report</h3>
<p class="p-opacity">This report summarises key results from the testing that took place from 19-21 April 2023. </p>
<p><a class="btn primary-bis" href="https://ec.europa.eu/digital-building-blocks/sites/download/attachments/647954663/Once_Only_Technical_System_Projectathon_Event_Report_April_v1.00.pdf" onclick="_paq.push(['trackEvent','conversion','oots-projectathon-detail-page-01','oots-projectathon-report'])"><span>Download the Report</span><span class="ico-download"></span></a></p>
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<h2>Other 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 #3</h3>   
<p>The October Projectathon is the final such event in 2023, just ahead of the legal deadline for EU Member States to implement the Once-Only Technical System. It builds on the work and experiences of the April and June Projectathons.</p>

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<p class="card-upcoming-date">18 - 20 October 2023</p>
<p><a class="btn ghost" href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Projectathon3"><span>Read more</span><span class="ico-cta-forward"></span></a></p>
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<h3>Projectathon #2</h3>   
<p>The June Projectathon provided a valuable moment for national implementation teams to perform interoperability tests prior to the summer recess.</p>

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<p class="card-upcoming-date">14 - 16 June 2023 | Brussels</p>
<p><a class="btn ghost" href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Projectathon2"><span>Read more</span><span class="ico-cta-forward"></span></a></p>
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