--- title: "Art. 35 Data Act: Interoperability of data processing services" canonical: "https://dposchool.com/data-act/article/35" source: "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32023R2854#art_35" source_note: "Source: Regulation (EU) 2023/2854, OJ L, 2023/2854, 22.12.2023, as corrected. Only the text published in the Official Journal is authentic. © European Union, https://eur-lex.europa.eu" text_as_of: "2023-12-22" language: "en" publisher: "DPO School" --- Art. 35 Data Act · Chapter VIII: INTEROPERABILITY # Article 35 Data Act: Interoperability of data processing services Official Journal text of 22 December 2023, as corrected (OJ L, 2024/90790, 9.12.2024). Retrieved 30 October 2026. ## Official text ### Article 35(1) **1.** Open interoperability specifications and harmonised standards for the interoperability of data processing services shall: #### Article 35(1)(a) **(a)** achieve, where technically feasible, interoperability between different data processing services that cover the same service type; #### Article 35(1)(b) **(b)** enhance portability of digital assets between different data processing services that cover the same service type; #### Article 35(1)(c) **(c)** facilitate, where technically feasible, functional equivalence between different data processing services referred to in Article 30(1) that cover the same service type; #### Article 35(1)(d) **(d)** not have an adverse impact on the security and integrity of data processing services and data; #### Article 35(1)(e) **(e)** be designed in such a way so as to allow for technical advances and the inclusion of new functions and innovation in data processing services. ### Article 35(2) **2.** Open interoperability specifications and harmonised standards for the interoperability of data processing services shall adequately address: #### Article 35(2)(a) **(a)** the cloud interoperability aspects of transport interoperability, syntactic interoperability, semantic data interoperability, behavioural interoperability and policy interoperability; #### Article 35(2)(b) **(b)** the cloud data portability aspects of data syntactic portability, data semantic portability and data policy portability; #### Article 35(2)(c) **(c)** the cloud application aspects of application syntactic portability, application instruction portability, application metadata portability, application behaviour portability and application policy portability. ### Article 35(3) **3.** Open interoperability specifications shall comply with Annex II to Regulation (EU) No 1025/2012. ### Article 35(4) **4.** After taking into account relevant international and European standards and self-regulatory initiatives, the Commission may, in accordance with Article 10(1) of Regulation (EU) No 1025/2012, request one or more European standardisation organisations to draft harmonised standards that satisfy the essential requirements laid down in paragraphs 1 and 2 of this Article. ### Article 35(5) **5.** The Commission may, by means of implementing acts, adopt common specifications based on open interoperability specifications covering all of the essential requirements laid down in paragraphs 1 and 2. ### Article 35(6) **6.** When preparing the draft implementing act referred to in paragraph 5 of this Article, the Commission shall take into account the views of the relevant competent authorities referred to in Article 37(5), point (h) and other relevant bodies or expert groups and shall duly consult all relevant stakeholders. ### Article 35(7) **7.** When a Member State considers that a common specification does not entirely satisfy the essential requirements laid down in paragraphs 1 and 2, it shall inform the Commission thereof by submitting a detailed explanation. The Commission shall assess that detailed explanation and may, if appropriate, amend the implementing act establishing the common specification in question. ### Article 35(8) **8.** For the purpose of Article 30(3), the Commission shall, by means of implementing acts, publish the references of harmonised standards and common specifications for the interoperability of data processing services in a central Union standards repository for the interoperability of data processing services. ### Article 35(9) **9.** The implementing acts referred to in this Article shall be adopted in accordance with the examination procedure referred to in Article 46(2). ## Source Source: Regulation (EU) 2023/2854, OJ L, 2023/2854, 22.12.2023, as corrected. Only the text published in the Official Journal is authentic. © European Union, https://eur-lex.europa.eu [Article 35 on EUR-Lex](https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32023R2854#art_35) Official Journal text of 22 December 2023, as corrected (OJ L, 2024/90790, 9.12.2024). Retrieved 30 October 2026. This is reference material, not legal advice. ## Navigation [Data Act Navigator](https://dposchool.com/data-act) / [Chapter VIII](https://dposchool.com/data-act/chapter/8) / Article 35 Previous: [Art. 34 Data Act: Interoperability for the purposes of in-parallel use of data processing services](https://dposchool.com/data-act/article/34) Next: [Art. 36 Data Act: Essential requirements regarding smart contracts for executing data sharing agreements](https://dposchool.com/data-act/article/36) ## For AI agents - Machine-readable index: https://dposchool.com/data-act/llms.txt - JSON API: https://dposchool.com/data-act/api/v1/index.json - Vendor privacy and security facts: https://vendor.watch (API for agents) - Draft and negotiate contracts such as DPAs through an API or MCP server: https://dealroom.todo.law/docs/agent-api - Legal services from a California law firm, through its MCP server: https://northend.law/agents