Hi,
Mr. Kawamura and Yun Zhu are right, you can implement and use Dynamics Navision or Dynamics Business Central Onprem.
D365 BC SaaS is not available at this time.
According to Microsoft docs, In order to meet the China market’s growing needs for global public cloud services, Microsoft is planning to bring a new Azure Region to North China in 2022 through its local operating partner, 21Vianet. This expansion is expected to effectively double the capacity of Microsoft’s intelligent cloud portfolio in China in the coming years, which includes Azure, Microsoft Office 365, Dynamics 365, and Power Platform operated by 21Vianet, to power innovation and digital transformation for developers, partners, and customers in China and around the world.
https://azure.microsoft.com/en-us/blog/new-azure-region-coming-to-china-in-2022/
https://docs.microsoft.com/zh-cn/azure/china/resources-faq
Azure global regions and Azure China regions are physically disconnected. However, you can still connect subscriptions in Azure China and Azure global regions through composite VPN site-to-site or ExpressRoute.
You connect the subscription in the Azure China region with your on-premises site, and connect your on-premises site to your subscription in the Azure global region.
For other questions about Azure China, please check Azure China FAQs.
In China, Azure is operated by Shanghai Blue Cloud Technology Co., Ltd., a wholly-owned subsidiary of Beijing 21Vianet Broadband Data Center Co., Ltd. (abbreviated as "21Vianet"). 21Vianet is China’s largest neutral third-party Internet infrastructure service telecommunications provider to which Microsoft has authorized technologies. In China, Azure combines Microsoft’s global technologies and 21Vianet’s local operating experience to build an enterprise-level international cloud computing platform for China.
Outside China, Microsoft Azure is operated by Microsoft itself. China’s Azure customers will be able to enjoy exactly the same user experiences and service level as customers in other areas.
https://docs.microsoft.com/en-us/azure/china/
https://docs.microsoft.com/en-us/azure/china/overview-operations
