By Foo Yun Chee BRUSSELS (Reuters) – Cloud computing, in which Amazon and Microsoft are the biggest players followed by Alphabet’s Google, doesn’t pose competition concerns yet because of Europe’s Gaia-X initiative, EU antitrust chief Margrethe Vestager said on Monday. Cloud computing services have seen demand soar, driven in part by the COVID-19 pandemic. They have become a big driver of growth at the big tech companies, with AWS generating 13% of Amazon’s revenue last year and 74% of its operating income while Microsoft’s Intelligent Cloud unit, of which Azure is a big chunk, brought in 37% …