The aim of the guidance is to harmonise implementation between the regulations. It also seeks to increase the understanding of relevant parties of their obligations and rights under the DMA and to ensure the consistent and effective application of the DMA while respecting the provisions of the GDPR.

Both the GDPR and the DMA aim to protect individuals in the digital environment. The regulations are mutually supportive in their objectives: protecting individuals' rights and privacy under the GDPR and ensuring the fairness and competitiveness of digital markets under the DMA.

Many of the issues covered by the DMA involve the processing of personally identifiable information, and several provisions directly refer to the definitions and concepts of the GDPR. The guidance is intended to clarify how the provisions of the DMA can be implemented in accordance with the provisions of the GDPR, such as those regarding specific choice and valid consent requirements. The guidance also addresses other provisions such as those related to the distribution of applications, data portability, data access requests, and messaging service interoperability.

See the EDPB press relese here: DMA and GDPR: EDPB and European Commission endorse joint guidelines to clarify common touchpoints | European Data Protection Board

The guidance can be found here: Joint Guidelines on the Interplay between the Digital Markets Act and the General Data Protection Regulation | European Data Protection Board