On 2 May 2023, the interoperability requirement outlined in the Digital Markets Act (DMA) is implemented. The DMA requires platforms designated as "gatekeepers" to make their interpersonal communications services interoperable with the systems of other service providers. Upon request, "gatekeepers" have to provide free-of-charge technical interfaces or other options to enable interoperability with their system. However, the Act specifies that gatekeepers should not be prevented from implementing measures to ensure that interoperability doesn't negatively impact the integrity of the operating systems, cyber security and protection of the end-user data. The DMA defines “gatekeepers” as the companies providing “a core platform service” (such as browsers, messengers or social media) that operate in three or more member states and have more than 45 million monthly “end users” and 10'000 “business users”. Furthermore, such companies must have an annual turnover of over EUR 7.5 billion or at least EUR 75 billion of market capitalisation.
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