SpotX

The business operates as a publisher-facing programmatic video and connected TV monetisation platform. It provides a proprietary video inventory management and ad-serving stack that connects publishers’ video and CTV inventory to demand sources via real-time bidding and programmatic pipes. Value is created by enabling publishers and streaming services to centralise inventory management, run unified auctions, support server-side ad insertion and header bidding, and gain reporting on performance and yield. The model depends on transaction volume and depth of integrations with publishers, OTT platforms and demand partners, competing with other video SSPs and ad-serving platforms in terms of fill rates, effective CPMs and control for publishers.

SpotX is a US-based programmatic video advertising supply-side platform and ad-serving system focused on monetising digital video and connected TV inventory for publishers and media owners. Founded in 2007, it provides a proprietary video inventory management platform, real-time auctions and integrations for server-side ad insertion and header bidding, enabling publishers to sell video advertising programmatically and via direct deals. The company was acquired and is now operated by Magnite, Inc.

The platform generates revenue by taking a percentage of ad spend that flows through its marketplace and by charging for associated ad-serving and platform services. Its direct customers are publishers, broadcasters, streaming services and other media owners who use the platform to manage and optimise yield on their video and CTV inventory, often integrating SpotX into broader ad tech and OTT workflows.