ExpressRoute supports three routing domains for various types of services.

Private peering

• Virtual Networks, including all virtual machines and cloud services

Public peering

• Most of the Azure services with a few exceptions below
• Power BI
• Dynamics 365 for Operations (formerly known as Dynamics AX Online)

Microsoft peering

• Office 365*
• Most of the Dynamics 365 services (formerly known as CRM Online)
  • Dynamics 365 for Sales
  • Dynamics 365 for Customer Service
  • Dynamics 365 for Field Service
  • Dynamics 365 for Project Service

Very Important! The following Azure services are not supported on ExpressRoute!

• CDN
• Visual Studio Team Services Load Testing
• Multi-factor Authentication
• Traffic Manager

* Even if Office 365 is configured to work over ExpressRoute, general access to the Internet is still required! Feel free to contact me if you need more details!