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# Article 1 — Subject matter and scope (Article 48 of Directive 2014/65/EU)

**Commission Delegated Regulation (EU) 2017/584 · binding · OJ L 87, 31.3.2017 · dated 14 Jul 2016 [in force]**

*In force · Commission Delegated Regulation (EU) 2017/584, OJ L 87, 31.3.2017 · Checked against EUR-Lex on 26 Oct 2026 · [Official source](https://eur-lex.europa.eu/eli/reg_del/2017/584/oj/eng)*

1. <a id="art-1-p-1"></a>This Regulation lays down detailed rules for the organisational requirements of the systems of the trading venues allowing or enabling algorithmic trading, in relation to their resilience and capacity, requirements on trading venues to ensure appropriate testing of algorithms and requirements in relation to the controls concerning DEA pursuant to Article 48(12)(a),(b) and (g) of Directive 2014/65/EU.
1. <a id="art-1-p-2"></a>For the purposes of this Regulation, it is considered that a trading venue allows or enables algorithmic trading where order submission and order matching is facilitated by electronic means.
1. <a id="art-1-p-3"></a>For the purposes of this Regulation, any arrangements or systems that allow or enable algorithmic trading shall be considered ‘algorithmic trading systems’.