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Digital Markets Act: A Practical Guide to Interface Design Compliance

Lorenzo Colombani18 min read

UX/UI Implementation Report Digital Design and Regulatory Compliance October 2025 By Lorenzo Colombani Executive Summary The Digital Markets Act fundamentally changes how designers must approach interface creation for major digital platforms. Think of it this…

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Behind the argument

Regulation becomes visible in the interface.

This October 2025 report considers the Digital Markets Act through the practical choices a designer makes: selection screens, defaults, visual hierarchy, third-party services and transparency.

It proposes interface patterns for examining user choice and control. The examples are illustrative design analysis, tied to the publication’s regulatory context.

By
Lorenzo Colombani
Format
Article
Published
19 October 2025
Form
UX/UI implementation report
Publication context
October 2025
Focus
Choice architecture and interface compliance
Preview
content visualization

Reading notes

Regulation becomes visible in the interface.

Choice at the component level

The report uses search-engine selection as a case for comparing visual weight, preselection and the visibility of alternatives. It then explores indicators that make default choices easier to revisit.

Beyond a disclosure screen

Interoperability, progressive disclosure, animation, component libraries and testing are all discussed. The report presents patterns to evaluate against the requirements of a specific implementation.