Open Source

CADA and the Interoperable Europe Portal: Hosting the EU OSS Catalogue The proposed Cloud and AI Development Act (CADA) designates the Interoperable Europe portal as the mandatory hosting infrastructure for the new EU Open Sou CADA Article 41: How 'Open Source First' Applies to AI Development As proposed in COM(2026) 502 final, the Cloud and AI Development Act (CADA) would require the EU and Member States to take measures encouraging Union entit CADA Article 41: How Total Cost of Ownership (TCO) Drives Open Source Choices Under the proposed Cloud and AI Development Act (CADA), public sector bodies must evaluate software choices based on "total cost" as a primary objective cr CADA Article 41: What does 'facilitate the reuse' mean for public sector cloud? Under Article 41 of the proposed Cloud and AI Development Act (CADA), the phrase "facilitate the reuse" imposes a proactive, structural obligation on the U CADA Article 42: What happens if a public body shares open source software outside the EU OSS Catalogue? As proposed, Article 42 of the Cloud and AI Development Act (CADA) imposes a strict procedural obligation: when Union entities and public sector bodies mak CADA Article 42: What 'Software Developed By or For' a Public Body Means Under the proposed Cloud and AI Development Act (CADA), the phrase "software developed by or for" a public body defines the scope of software subject to a CADA Article 42: When does the obligation to use the EU OSS Catalogue apply? Under the proposed Cloud and AI Development Act (CADA), Article 42 does not create a blanket obligation for public sector bodies or Union entities to open- CADA Article 42: Whose software must be shared and reused? As proposed, Article 42 of the Cloud and AI Development Act (CADA) applies exclusively to software to which a Union entity or public sector body holds inte CADA: How the OSPO Network and EU OSS Catalogue Work Together As proposed in the Cloud and AI Development Act (CADA), the Network of Open Source Programme Offices (OSPO Network) and the EU Open Source Solutions Catalo CADA on Open Source: How it reduces foreign dependency and strengthens sovereignty As proposed, the Cloud and AI Development Act (CADA) establishes a strategic mandate for the Union and Member States to encourage public-sector bodies to p CADA, Open Source and the Draghi Report: Sovereignty via Code The proposed Cloud and AI Development Act (CADA) operationalizes the strategic recommendations of Mario Draghi’s report, The future of European competitive CADA Open Source Assessment: Obligations, OSPO Network & Reuse Rules The proposed Cloud and AI Development Act (CADA) does not impose a blanket mandate to use open-source software. CADA Open Source Chapter: Articles 41–44 Explained The open source chapter of the proposed Cloud and AI Development Act (CADA) is defined by Articles 41, 42, 43, and 44 within Title IV (Autonomy). CADA Open Source Chapter: Linking Article 41 to the EU Open Source Strategy The proposed Cloud and AI Development Act (CADA) serves as the legislative engine for the EU Open Source Strategy, transforming high-level policy goals int CADA Open Source First: How it compares to choosing proprietary software Under the proposed Cloud and AI Development Act (CADA), public authorities must prioritize open-source software and components when building their cloud an CADA Open Source First: How it interacts with EU procurement rules Under the proposed Cloud and AI Development Act (CADA), Union entities and public sector bodies must actively "encourage" the use of open standards and com CADA Open Source First vs Sovereignty Tiers: How They Interact Under the proposed Cloud and AI Development Act (CADA), the "open source first" principle in Article 41 and the cloud computing sovereignty framework in Ar CADA Open Source for Developers: Licence Selection and Reuse Rules The proposed Cloud and AI Development Act (CADA) does not mandate that all public-sector software be open source. CADA Open Source: How it aligns with the Apply AI Strategy and Digital Decade As proposed in COM(2026) 502 final, the Cloud and AI Development Act (CADA) explicitly identifies open source as a strategic lever to boost technological s CADA Open Source: How obligations differ between Union entities and Member States Under the proposed Cloud and AI Development Act (CADA), the obligation to promote open source is unified in principle but differentiated in execution. CADA Open Source in Public Procurement: Clauses, IP & Article 44 As proposed in COM(2026) 502 final, the Cloud and AI Development Act (CADA) would require the EU and Member States to "encourage" Union entities and public CADA Open Source Obligations: Beyond the EU OSS Catalogue Listing Under the proposed Cloud and AI Development Act (CADA), listing software in the EU Open Source Solutions Catalogue is merely the final step in a broader co CADA Open Source: Practical First Steps for Public Bodies As proposed in COM(2026) 502 final, the Cloud and AI Development Act (CADA) mandates that Union entities and public sector bodies prioritize open source so CADA Open Source Provisions: Legal Basis, TFEU Articles 114 & 173 The legal basis for the open source provisions in the proposed Cloud and AI Development Act (CADA) is the cumulative application of Article 114 and Article CADA Open Source: The Commission's Role in the EU OSS Catalogue and OSPO Network Under the proposed Cloud and AI Development Act (CADA), the European Commission assumes a pivotal administrative and coordinating role in the EU's public-s CADA Open Source vs. Previous EU Approach: What Changes? As proposed, the Cloud and AI Development Act (CADA) fundamentally shifts the EU's approach to open source from a voluntary, fragmented policy to a mandato CADA Open Source: What it means for CTOs and architects As proposed, the Cloud and AI Development Act (CADA) does not mandate that CTOs or architects exclusively use open-source software, but it establishes a st CADA OSPO Network: Common Technical, Legal & Organisational Challenges The proposed Cloud and AI Development Act (CADA) establishes a Network of Open Source Programme Offices (OSPO Network) to harmonise open-source governance CADA OSPO Network: How often does it meet and who chairs it? Under the proposed Cloud and AI Development Act (CADA), the European Commission is required to convene and chair meetings of the Open Source Programme Offi CADA OSPO Network: What are 'projects of common interest'? Under the proposed Cloud and AI Development Act (CADA), the Network of Open Source Programme Offices (OSPO Network) is explicitly mandated to facilitate th Can a Member State run its own national open source catalogue under CADA? Yes, under the proposed Cloud and AI Development Act (CADA), Member States and public-sector bodies may maintain their own national or regional open source Can any public body request to join the EU OSS Catalogue? As proposed in the Cloud and AI Development Act (CADA), any Union entity or public sector body that owns or maintains a software catalogue or repository ha Can a private company reuse software from the EU OSS Catalogue under CADA? Yes, a private company can reuse software from the EU Open Source Solutions Catalogue, provided the specific software is released under an open source lice Can open source from the CADA catalogue be relicensed or sublicensed by reusers? Under the proposed Cloud and AI Development Act (CADA), software made available for reuse by Union entities and public sector bodies must be shared via the Can regional and local OSPOs join the CADA network? Article 44 explained Yes. Can the EU OSS Catalogue federate with private-sector catalogues? As proposed in the Cloud and AI Development Act (CADA), the EU Open Source Solutions Catalogue (EU OSS Catalogue) is a centralized hub designed to federate Does CADA give the Commission delegated powers over open source? No, the proposed Cloud and AI Development Act (CADA) does not grant the European Commission delegated or implementing powers to amend the substance of the Does CADA open source apply to cloud services or just software? As proposed, the Cloud and AI Development Act (CADA) distinguishes sharply between the software developed by public bodies and the cloud infrastructure hos Does CADA open source apply to EU institutions or only national bodies? As proposed, the Cloud and AI Development Act (CADA) applies its open-source obligations to both EU institutions and national public bodies. Does CADA open source cover data and AI training datasets? No, the proposed Cloud and AI Development Act (CADA) does not mandate that data or AI training datasets be released under open-source licenses. Does CADA open source create new obligations for software vendors? As proposed, the Cloud and AI Development Act (CADA) does not impose direct, standalone compliance obligations on private software vendors to open-source t Does CADA recognise the EUPL (European Union Public Licence)? The proposed Cloud and AI Development Act (CADA) does not explicitly name the European Union Public Licence (EUPL) in its text, but it legally recognises i Does CADA require public bodies to use open source software? No. Does CADA require sharing software with the public or only other public bodies? Under the proposed Cloud and AI Development Act (CADA), Union entities and public sector bodies are not automatically required to release all software they Does CADA's open source chapter apply to AI models and tools? As proposed, the Cloud and AI Development Act (CADA) does not impose direct, binding compliance obligations on private providers of AI models or tools to r Does CADA's 'open source first' apply to legacy systems or only new builds? Under the proposed Cloud and AI Development Act (CADA), the "open source first" principle applies prospectively to new developments, not retrospectively to Does CADA's reuse rule apply to software a public body only licenses, not owns? No, the proposed Cloud and AI Development Act (CADA) does not require public bodies to make third-party licensed software available for reuse. Does 'open source first' override security requirements under CADA? No. Does the CADA OSPO Network produce binding rules or guidance? The Network of Open Source Programme Offices (OSPO Network) established under the proposed Cloud and AI Development Act (CADA) does not produce binding rul Does the EU OSS Catalogue host the code itself or just link to it? As proposed in the Cloud and AI Development Act (CADA), the EU Open Source Solutions Catalogue (EU OSS Catalogue) would function strictly as a centralised Does the OSPO Network have any enforcement role under CADA? No, the Network of Open Source Programme Offices (OSPO Network) established under the proposed Cloud and AI Development Act (CADA) has no enforcement role. EU OSS Catalogue Deadline: When must the CADA catalogue be operational? As proposed in the Cloud and AI Development Act (CADA), there is no specific, standalone calendar deadline for the EU Open Source Solutions Catalogue (EU O How can SMEs benefit from the EU OSS Catalogue under CADA? Under the proposed Cloud and AI Development Act (CADA), the EU Open Source Solutions Catalogue (EU OSS Catalogue) would serve as a centralized, free-to-acc How does a repository get connected to the EU OSS Catalogue under CADA? Under the proposed Cloud and AI Development Act (CADA), any Union entity or public sector body that owns or maintains a software catalogue or repository ma How does Article 42 connect to the EU OSS Catalogue in Article 43? Under the proposed Cloud and AI Development Act (CADA), Article 42 establishes a mandatory routing requirement: when Union entities or public sector bodies How does CADA define open source licence (Article 2(25))? The proposed Cloud and AI Development Act (CADA) does not provide a standalone definition for "open source licence." Instead, Article 2(25) of the CADA pro How does CADA define the scope of 'reuse' for software? As proposed, the Cloud and AI Development Act (CADA) defines the scope of software reuse in Article 42, which mandates that any Union entity or public sect How does CADA encourage contributing back to open source projects? As proposed, the Cloud and AI Development Act (CADA) establishes a mandatory framework for Union entities and public sector bodies to share software develo How does CADA open source affect open source software providers' business models? As proposed, the Cloud and AI Development Act (CADA) does not mandate a ban on proprietary software, but it structurally alters the public procurement land How does CADA open source help startups access public-sector technology? As proposed, the Cloud and AI Development Act (CADA) would establish the EU Open Source Solutions Catalogue under Article 43 to centralize public-sector so How does CADA open source improve interoperability between administrations? As proposed, the Cloud and AI Development Act (CADA) would fundamentally reshape how EU public administrations build digital services by mandating an "open How does CADA open source relate to interoperability? As proposed, the Cloud and AI Development Act (CADA) explicitly ties open source to interoperability by obliging Union entities and Member States to encour How does CADA open source support better value for public money? As proposed, the Cloud and AI Development Act (CADA) directly links open source adoption to better value for public money by shifting procurement focus fro How does CADA open source support innovation across the EU? As proposed, the Cloud and AI Development Act (CADA) would establish a framework to encourage Union entities and public sector bodies to prioritise open so How does CADA open source support resilience of public-sector IT? As proposed, the Cloud and AI Development Act (CADA) would require the Union and Member States to take necessary measures to encourage public-sector bodies How does CADA open source support waste reduction and efficiency in IT spend? The proposed Cloud and AI Development Act (CADA) would fundamentally shift how the EU public sector manages software spend by prioritizing reuse over redun How does 'open source first' affect cloud migration decisions in the public sector under CADA? Under the proposed Cloud and AI Development Act (CADA), public sector bodies must actively encourage the use of open standards and components released unde How does 'open source first' reduce costs for public administrations under CADA? As proposed in COM(2026) 502 final, the Cloud and AI Development Act (CADA) introduces a strategic "open source first" approach to reduce public spending b How does open source help avoid vendor lock-in under CADA? Under the proposed Cloud and AI Development Act (CADA), open source is a strategic lever to prevent vendor lock-in by ensuring public sector bodies retain How does open source improve transparency in the public sector under CADA? As proposed, the Cloud and AI Development Act (CADA) would require the Union and Member States to encourage public sector bodies to use and facilitate the How does open source support security and auditability under CADA? Under the proposed Cloud and AI Development Act (CADA), open source is positioned as a strategic lever for security and auditability, not merely a licensin How does open source under CADA reduce duplication across the public sector? As proposed, the Cloud and AI Development Act (CADA) tackles the costly inefficiency of public bodies rebuilding the same digital solutions by mandating th How does the EU OSS Catalogue improve discoverability of public software under CADA? The proposed Cloud and AI Development Act (CADA) establishes the EU Open Source Solutions Catalogue (EU OSS Catalogue) as a mandatory, centralised hub to s How does the OSPO Network promote sharing and reuse of open-source software? The proposed Cloud and AI Development Act (CADA) establishes a Network of Open Source Programme Offices (OSPO Network) to systematically promote the sharin How does the OSPO Network share best practices on open source under CADA? Under the proposed Cloud and AI Development Act (CADA), the Network of Open Source Programme Offices (OSPO Network) serves as the central coordination hub How do you find and reuse software in the EU OSS Catalogue? Under the proposed Cloud and AI Development Act (CADA), the European Commission would establish and maintain a centralised EU Open Source Solutions Catalog How do you join the CADA OSPO Network? Under the proposed Cloud and AI Development Act (CADA), joining the OSPO Network is a voluntary process open to Open Source Programme Offices (OSPOs) estab How is open source progress measured under CADA? As proposed, the Cloud and AI Development Act (CADA) does not rely on vague policy statements to gauge open source success; it establishes a concrete, data How should a public body release software for reuse under CADA? Under the proposed Cloud and AI Development Act (CADA), Union entities and public sector bodies that voluntarily choose to make software available for reus How to list software on the EU OSS Catalogue under CADA Under the proposed Cloud and AI Development Act (CADA), you do not upload software directly to the central EU Open Source Solutions Catalogue (EU OSS Catal How to set up an Open Source Programme Office (OSPO) to join the CADA network Under the proposed Cloud and AI Development Act (CADA), public sector bodies at local, regional, or national levels are encouraged to establish Open Source Is open source mandatory under CADA? Article 41 explained No, open source is not strictly mandatory under the proposed Cloud and AI Development Act (CADA). Is sharing public-sector software mandatory under CADA? No, the proposed Cloud and AI Development Act (CADA) does not mandate that public-sector bodies must share their software. Is the EU OSS Catalogue free to use? CADA Article 43 Yes, as proposed in the Cloud and AI Development Act (CADA), the EU Open Source Solutions Catalogue (EU OSS Catalogue) is free to use. Is the EU OSS Catalogue the same as code.europa.eu or Joinup? No, the EU Open Source Solutions Catalogue (EU OSS Catalogue) proposed under the Cloud and AI Development Act (CADA) is not the same entity as code.europa. Open Standards vs. Open Source in CADA: What's the Difference? Under the proposed Cloud and AI Development Act (CADA), open standards and open source are distinct but complementary mechanisms for strengthening Europe's What are the benefits of share-and-reuse of public-sector software under CADA? As proposed in the Cloud and AI Development Act (CADA), sharing and reusing public-sector software under open-source licences is designed to reduce duplica What are the tasks of the CADA OSPO Network? Under the proposed Cloud and AI Development Act (CADA), the OSPO Network's tasks are set out in Article 44(3): facilitating the exchange of information, ex What CADA's open source rules mean for cloud and software providers Under the proposed Cloud and AI Development Act (CADA), the open source chapter (Articles 41–44) would shape public-sector cloud, AI and software buying in What criteria can a public body use to NOT choose open source under Article 41? Under the proposed Cloud and AI Development Act (CADA), Article 41 establishes a default obligation for Union entities and public sector bodies to "use and What criteria does the Commission use to connect a catalogue to the EU OSS Catalogue? Under the proposed Cloud and AI Development Act (CADA), the European Commission retains exclusive discretion to decide whether to connect a national or ent What does 'building their cloud and AI ecosystem or stack' mean in Article 41? Under Article 41 of the proposed Cloud and AI Development Act (CADA), Union entities and Member States must encourage public sector bodies to use open stan What does CADA open source mean for developers? As proposed in COM(2026) 502 final, the Cloud and AI Development Act (CADA) establishes a strategic preference for open source in the public sector. What does CADA's open source chapter mean for public-sector buyers? As proposed, the Cloud and AI Development Act (CADA) sets out an "open source first" principle for the EU public sector in Article 41 — but it is an encour What is an Open Source Programme Office (OSPO) under CADA? An Open Source Programme Office (OSPO) is a dedicated organisational structure within a public sector body or Union entity responsible for managing the lif What is an 'open standard' under CADA's open source rules? Under the proposed Cloud and AI Development Act (CADA), the term 'open standard' is not defined by a standalone technical specification but is functionally What is a public sector body for CADA open source purposes? Under the proposed Cloud and AI Development Act (CADA), the term "public sector body" is not defined anew but incorporates the definition from Directive (E What is a Union entity for CADA open source purposes? Under the proposed Cloud and AI Development Act (CADA), a "Union entity" is strictly defined in Article 2(7) as any Union institution, body, office, or age What is in the EU OSS Catalogue? | CADA Article 43 Explained The EU Open Source Solutions Catalogue (EU OSS Catalogue) is a centralised digital repository established by Article 43(1) of the proposed Cloud and AI Dev What is the CADA OSPO Network (Network of Open Source Programme Offices)? As proposed in the Cloud and AI Development Act (CADA), the Network of Open Source Programme Offices (OSPO Network) is a coordination network the Commissio What is the EU Open Source Solutions Catalogue under CADA? The EU Open Source Solutions Catalogue (EU OSS Catalogue) is a centralised, free-to-access platform proposed under Article 43 of the Cloud and AI Developme What is the Interoperable Europe Act and why does CADA reference it? The Interoperable Europe Act (IEA), Regulation (EU) 2024/903, is the EU's legal framework for ensuring digital public services work seamlessly across borde What is the 'open source first' principle in CADA? In the proposed Cloud and AI Development Act (CADA), the "open source first" principle is set out in Article 41. What is the share-and-reuse rule for software in CADA? Under the proposed Cloud and AI Development Act (CADA), the share-and-reuse rule is set out in Article 42. What licensing challenges does the OSPO Network help solve under CADA? The proposed Cloud and AI Development Act (CADA) establishes a network of Open Source Programme Offices (OSPOs) to help public sector bodies navigate the c What maintenance challenges does the OSPO Network address under CADA? As proposed in the Cloud and AI Development Act (CADA), the OSPO Network addresses critical maintenance challenges by creating a structured forum for publi What records or metadata are needed to list software in the EU OSS Catalogue? Under the proposed Cloud and AI Development Act (CADA), Union entities and public sector bodies must list software made available for reuse on a catalogue What templates or guidance can public bodies expect from the OSPO Network under CADA? As proposed in the Cloud and AI Development Act (CADA), the Network of Open Source Programme Offices (OSPO Network) is explicitly tasked with developing pr Where is the EU OSS Catalogue hosted? CADA Article 43 explained Under the proposed Cloud and AI Development Act (CADA), the EU Open Source Solutions Catalogue (EU OSS Catalogue) would be hosted on the Interoperable Euro Which licences count as open source for CADA purposes? Under the proposed Cloud and AI Development Act (CADA), the term "open source licence" is not defined in isolation but by explicit reference to the Interop Who coordinates the CADA OSPO Network? Commission's role explained Under the proposed Cloud and AI Development Act (CADA), the European Commission holds the central responsibility for supporting and coordinating the Networ Who establishes the OSPO Network under CADA? Under the proposed Cloud and AI Development Act (CADA), the European Commission is the sole entity responsible for establishing the Network of Open Source Who maintains the EU OSS Catalogue under CADA? Under the proposed Cloud and AI Development Act (CADA), the European Commission is solely responsible for providing and maintaining the EU Open Source Solu Who must promote open source under CADA? Article 41 explained Under the proposed Cloud and AI Development Act (CADA), the primary duty to promote open source lies with the Union and the Member States. Why does CADA create an OSPO Network? (Recital 84 explained) The proposed Cloud and AI Development Act (CADA) establishes a Network of Open Source Programme Offices (OSPO Network) to ensure the "effective and consist Why does CADA promote open source for digital sovereignty? The proposed Cloud and AI Development Act (CADA) elevates open source from a technical preference to a strategic imperative for the European Union's digita Why does CADA require sharing through a connected catalogue? As proposed in the Cloud and AI Development Act (CADA), Union entities and public-sector bodies must share software developed for them via a catalogue or r