---
title: "Art. 34 Data Act: Interoperability for the purposes of in-parallel use of data processing services"
canonical: "https://dposchool.com/data-act/article/34"
source: "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32023R2854#art_34"
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. 34 Data Act · Chapter VIII: INTEROPERABILITY

# Article 34 Data Act: Interoperability for the purposes of in-parallel use 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 34(1)

**1.** The requirements laid down in Article 23, Article 24, Article 25(2), points (a)(ii), (a)(iv), (e) and (f) and Article 30(2) to (5) shall also apply mutatis mutandis to providers of data processing services to facilitate interoperability for the purposes of in-parallel use of data processing services.

### Article 34(2)

**2.** Where a data processing service is being used in parallel with another data processing service, the providers of data processing services may impose data egress charges, but only for the purpose of passing on egress costs incurred, without exceeding such costs.

## 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 34 on EUR-Lex](https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32023R2854#art_34)

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 34

Previous: [Art. 33 Data Act: Essential requirements regarding interoperability of data, of data sharing mechanisms and services, as well as of common European data spaces](https://dposchool.com/data-act/article/33)

Next: [Art. 35 Data Act: Interoperability of data processing services](https://dposchool.com/data-act/article/35)

## 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