we have express routes to US, EMEA and APAC
When a live event is organized using Microsoft Teams e.g. in EMEA Region as per Tenant Location, is it possible for Attendees to join even from their respective Regions instead of everyone going to UK/EMEA (like Microsoft Meetings)
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Even if the meeting is hosted in EMEA the client will connect from you local office in APAC via Express Route to Microsoft Network and then via Microsoft Network to EMEA servers.
But user might get a better experience without the Express Route.
If you think that your Express Routes will be filled up with Live Events traffic you can use a eCDN solution to distribute the load. https://docs.microsoft.com/en-us/stream/ecdn