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| 45. | In practice, the Commission is usually in a position to preliminarily identify the most plausible relevant product and geographic markets within which a particular conduct or concentration should be assessed. This can be based on readily available information, the relevant markets defined in past Commission decisions in the same or similar industries, or information submitted by the undertaking(s) involved. There will often be a limited number of such plausible alternative relevant markets. The Commission then adjusts its initial working hypotheses about the relevant product and geographic markets in the light of the evidence gathered during its investigation, if necessary. In many cases, a cursory examination of the plausible alternative market definitions is sufficient to structure and facilitate the competitive assessment in the Commission’s decision, without the need to carry out a detailed analysis to conclude on the definition of each relevant market. In its decisions, the Commission may set out and consider alternative market definitions, beginning with potential wider or narrower markets, depending on the specificities of the case.

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Source: EUR-Lex (Cellar) · retrieved 2026-09-07 · Text as adopted (Official Journal); later amendments are not incorporated in this text.