AppNexus
RebrandedNew York, NY, United States · Founded 2007
1001-5000 employees · ~$290M
AppNexus was an American multinational technology company that operated a cloud-based software platform enabling and optimizing programmatic online advertising, founded in 2007 by former Right Media staff, CTO Brian O'Kelley, and Mike Nolet.
Where they sit
Stack tier: Core Platforms (S)
Demand Side Platform (DSP)Supply Side Platform (SSP)Programmatic Platform
One of the largest independent programmatic advertising platforms prior to acquisition, competing directly with Google DoubleClick as a full-stack buy-side and sell-side ad tech provider
Ownership
Parent: Microsoft (via Xandr acquisition)