---
title: "Art. 27 DSA: Recommender system transparency"
canonical: "https://dposchool.com/dsa/article/27"
source: "https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32022R2065#art_27"
source_note: "Source: Regulation (EU) 2022/2065, OJ L 277, 27.10.2022, p. 1. Only the text published in the Official Journal is authentic. © European Union, https://eur-lex.europa.eu"
text_as_of: "2022-10-27"
language: "en"
publisher: "DPO School"
---

Art. 27 DSA · Chapter III: DUE DILIGENCE OBLIGATIONS FOR A TRANSPARENT AND SAFE ONLINE ENVIRONMENT · Section 3: Additional provisions applicable to providers of online platforms

# Article 27 DSA: Recommender system transparency

Official Journal text of 27 October 2022. Retrieved 30 October 2026.

## Official text

### Article 27(1)

**1.** Providers of online platforms that use recommender systems shall set out in their terms and conditions, in plain and intelligible language, the main parameters used in their recommender systems, as well as any options for the recipients of the service to modify or influence those main parameters.

### Article 27(2)

**2.** The main parameters referred to in paragraph 1 shall explain why certain information is suggested to the recipient of the service. They shall include, at least:

#### Article 27(2)(a)

**(a)** the criteria which are most significant in determining the information suggested to the recipient of the service;

#### Article 27(2)(b)

**(b)** the reasons for the relative importance of those parameters.

### Article 27(3)

**3.** Where several options are available pursuant to paragraph 1 for recommender systems that determine the relative order of information presented to recipients of the service, providers of online platforms shall also make available a functionality that allows the recipient of the service to select and to modify at any time their preferred option. That functionality shall be directly and easily accessible from the specific section of the online platform’s online interface where the information is being prioritised.

## Source

Source: Regulation (EU) 2022/2065, OJ L 277, 27.10.2022, p. 1. Only the text published in the Official Journal is authentic. © European Union, https://eur-lex.europa.eu

[Article 27 on EUR-Lex](https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32022R2065#art_27)

Official Journal text of 27 October 2022. Retrieved 30 October 2026.

This is reference material, not legal advice.

## Navigation

[DSA Navigator](https://dposchool.com/dsa) / [Chapter III](https://dposchool.com/dsa/chapter/3) / Article 27

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Next: [Art. 28 DSA: Online protection of minors](https://dposchool.com/dsa/article/28)

## For AI agents

- Machine-readable index: https://dposchool.com/dsa/llms.txt
- JSON API: https://dposchool.com/dsa/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