AppNexus
AppNexus is an enterprise-level computing cloud focused on comprehensive, self-service, virtualized hosting on demand.
AppNexus provides the servers and tools needed to build a highly available virtual datacenter, including bandwidth, hardware load balancing, geographically disparate datacenters, persistent clustered storage, and an SLA. AppNexus products are deployed and scaled at will via command-line tools.
The AppNexus cloud has also become an ecosystem where customers partner with each other and with vendors to reduce the latency inherent in web-based collaboration.