The Cisco Cloud Services Router 1000V (CSR 1000V) is a virtual form-factor router that delivers comprehensive WAN gateway and network services functions into virtual and cloud environments. Using familiar, industry-leading Cisco IOS XE Software networking capabilities, the CSR 1000V enables enterprises to transparently extend their WANs into provider-hosted clouds. Similarly, cloud providers themselves can use it to offer enterprise-class networking services to their tenants or customers.