The document discusses Microsoft Azure ExpressRoute, which provides a private connection between a customer's internal network and Microsoft Azure datacenters. It provides three key benefits: high-speed connectivity with low latency and jitter, private access to Microsoft cloud services like Azure and Office 365, and ability to extend on-premises networks into Azure. The document includes details on ExpressRoute providers and locations, connectivity models, billing options, and case studies of companies like Interserve that use ExpressRoute to leverage Azure's capabilities while ensuring quality of service for business critical applications and data.