On 6 March 2024, the designated gatekeepers are required to comply with the Digital Markets Act (DMA) obligations, including interoperability requirements. The companies classified as such are Alphabet, Amazon, Apple, ByteDance, Meta and Microsoft. The Commission identified 22 core platform services. Meta was designated as the gatekeeper based on the social networks Facebook and Instagram, the intermediation platform Meta Marketplace, the advertising platform Meta and the communication services WhatsApp and Messenger. ByteDance was designed based on the social network TikTok. Microsoft is considered a gatekeeper based on the social network Linkedin and its operating system, Windows PC OS. Amazon provides 2 core services, the intermediation service Amazon Marketplace and the advertising platform Amazon. Apple was designated based on the intermediation platform App Store, the browser platform Safari and the operating system IOS. Alphabet was designated based on the core intermediation services are Google Maps, Google Playa and Google Shopping, the advertising platform Google, the operating system Google Android, the video sharing platform YouTube, the browser Chrome and the search engine Google Search. 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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