Supply path optimization: curated marketplaces vs direct SSP integration

Supply path optimization: curated marketplaces vs direct SSP integration

Supply path optimization (SPO) is the practice of reducing how many intermediaries sit between your DSP and the publisher. Two tools dominate, and they solve different halves of the problem.

1. Direct SSP integration: you whitelist a short list of SSPs and cut the long tail of resellers. This attacks duplicate auction paths — the same impression offered through five SSPs, where you sometimes bid against yourself.

2. Curated marketplaces (an SSP packaging audience + inventory into a deal): you buy a pre-filtered slice. This attacks quality and targeting, not path count.

3. The tradeoff: direct integration lowers the take rate (the percentage the SSP keeps) because you skip resellers, but it requires you to do the curation yourself. A curated marketplace does curation for you and charges for it — often 8-15% on top.

4. Decide by what is broken. If your log-level data shows the same domain+placement arriving via many seller IDs at different costs, that is a path problem — go direct. If costs are clean but audience is junk, that is a quality problem — buy curation.

Why it matters: people apply curation to a path problem and wonder why fees rose without performance moving. Diagnose path versus quality from seller-ID dispersion in your logs first, then pick the tool.