Session 9. This is the ninth of ten presentations about Azure ExpressRoute and Azure ExpressRoute for Office 365. Paul Collinge presents this session about integration between the LAN and an ExpressRoute circuit for Office 365. In this talk we will discuss the network topology and routing aspects of the customer changes required for ExpressRoute for Office 365. This session is all about the customer's network and options for integrating the ExpressRoute routes for Office 365 with that network. It will include options for routing to Office 365 from the customer's LAN. Options for perimeter network connectivity, proxy servers and firewall configuration. And options for ExpressRoute related route propagation throughout the customer network.