“The DMA will force new obligations on companies deemed to be “gatekeepers” — a category defined by the legislation as firms with a market capitalization of at least €75 billion ($82 billion); at least 45 million monthly users; and a “platform” like an app or social network. Companies covered by this classification include well-known tech giants like Google, Microsoft, Meta, Amazon, and Apple, but also smaller entities like Booking.com.”
This isn’t a requirement that everyone expose a public API . https://www.theverge.com/2022/3/24/22994234/eu-antitrust-leg...:
“The DMA will force new obligations on companies deemed to be “gatekeepers” — a category defined by the legislation as firms with a market capitalization of at least €75 billion ($82 billion); at least 45 million monthly users; and a “platform” like an app or social network. Companies covered by this classification include well-known tech giants like Google, Microsoft, Meta, Amazon, and Apple, but also smaller entities like Booking.com.”