Using Office 365 while Travelling to China or having a Regional office in China

Maruthi Gadde  adding to the thread based on the experience of a multinational company with several offices in China, and a tenant outside of China:

In the typical case our China users can access all O365 services from our offices.  Performance varies greatly based on time of day, political climate and which ISP is used.  As an example, sending an email with an attachment may work as expected one day, but be extremely slow (or fail completely) the next.

The same is true for our visitors to China.  When accessing from a hotel instead of the office performance is typically worse.  In this case we can VPN to an office within China to improve the situation.  

If you want a 90% solution get higher quality Internet connections for your offices.  If you need to do better than that you have to work with a carrier to implement some from of Private Network solution.

-AM