AWS is Leading the Public Cloud Market in all Major Regions
https://www.srgresearch.com/articles/aws-leading-public-cloud-market-all-major-regions
https://www.srgresearch.com/articles/cloud-growth-rate-increased-again-q1-amazon-maintains-market-share-dominance

Worldwide
1.AWS (33%)
2.Microsoft (13%)
3.Google
4.Alibaba
5.IBM

APAC
1.AWS
2.Alibaba
3.Microsoft
4.Google
5.Tencent