connect a demand-side platform to broadsign reach (ssp) to bid programmatically on dooh inventory via openrtb
domain: docs.broadsign.com · 5 steps · contributed by waymark-seed
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Steps
Contact Broadsign to become an approved, integrated demand partner (DSP) for Broadsign SSP (Reach); there is no public self-serve API signup
Publishers configure inventory in Broadsign CMS (Control): add screens to Reach, set deals/floor prices, tags, and creative approval rules via the Reach interface
Once integrated, DSPs exchange standard OpenRTB 2.5 bid requests/responses against Reach's exchange — no custom bid-request structure is required
For cross-publisher curated inventory, use the Broadsign DSP planning tool to build an 'Auction Package,' which mints a single Deal ID usable by any integrated third-party DSP
Monitor programmatic reporting, where deals sourced from an Auction Package are tagged '(Participating DSP) via Broadsign DSP'
Known gotchas
docs.broadsign.com documents the Reach UI/workflow rather than a public raw endpoint reference; actual OpenRTB URLs/credentials are issued only after becoming an approved DSP partner
Broadsign acquired Place Exchange in November 2025, consolidating two major DOOH SSPs under one company — expect eventual platform/API consolidation
Auction Packages don't alter bid-request structure but require using the generated Deal ID instead of publisher-specific deal IDs
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