Thanks Paul for this article.
With you permission i will translate it in French for my customers.
This article is useful and actually we have to cope with in a 40 K users 0365 international onboarding. Geo location helps but not always. In some places especially in south Asia we have poor connectivity to the first Microsoft entry point. For security reasons we will also deploy Zscaller services in an large scale but we know that it will not fix all our bandwidth and latency issues. Bandwidth and latency is still an issue less for Outlook than Skype for Business (Sorry Teams ;-) and choosing 0365 will implies additional challenges and will also challenge the old network configurations. Lost of customers do not envision that before launching their 0365 unfortunately.
Laurent TERUIN [MVP]
lteruin@hotmail.com
Global architect in a (NonDisclosure) company.;-)