Observed Signal · Apr 15, 2025 · Field Guide / Guidance · Source: Marketecture · Impact: 2/5 · Sentiment: Neutral
Field Guide to Building an SSP
An in-depth field guide on how to build a supply-side platform (SSP), outlining three paths: (1) data-curation with deal-IDs via an SSP partner to avoid building a full pipeline, (2) obtaining a reseller seat on exchanges (Magnite, Index, PubMatic, Xandr) to create an exchange without full technology, and (3) building a lightweight MVP exchange on BidSwitch. The author weighs pros and cons for each option, including low technical complexity, potential data leakage, and costs such as a 15% reseller vig or 5-10% BidSwitch vig. Staffing guidance suggests a team of 4-5 engineers plus 1-2 business people (with possible offshore support) to operate a real SSP. The piece closes with a reading list covering industry moves like Experian acquiring Audigent and Interpublic Group purchasing Intelligence Node, among other Marketecture references, inviting readers to share their views on what building an SSP in 2025 entails.
Educational SSP field guide outlining multiple approaches; not industry-shifting
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Key Takeaways & Evidence Grounding
- The article presents three SSP-building paths: data-curation with deal-IDs via a partner SSP, reseller seats on Magnite/Index/PubMatic/Xandr, and an MVP exchange on BidSwitch.
- Pros/cons discussed include low technical complexity, data-leakage risk, and the financial vigs (roughly 15% for resellers and 5-10% for BidSwitch).
- Staffing recommendation: ~4-5 engineers and 1-2 business people, with potential offshore help.
- Reading list mentions Experian acquiring Audigent and Interpublic Group buying Intelligence Node for nearly $100 million.
Connected Companies & Entities
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Publishers, Build Your Own SSP!
This article proposes that publishers build their own white-label SSP to unlock direct relationships with bidders and DSPs, increasing revenue and control. By integrating an additional SSP path via OpenRTB, publishers can generate more impressions and optimize their existing ad stack, similar to header bidding. The article details technical considerations such as QPS, ads.txt, and sellers.json, and highlights the potential for cost transparency and reduced fragmentation. It also suggests using the publisher-SSP to review reseller paths and manage data sharing. Ultimately, the approach enables publishers to become more active participants in the ecosystem, working directly with DSPs like The Trade Desk's OpenPath initiative.
How Much DSP Is Inside SSPs Today?
The article examines the blurring boundaries between supply-side platforms (SSPs) and demand-side platforms (DSPs) in programmatic advertising, using PubMatic as an example. PubMatic, historically an SSP, now offers direct inventory access to agencies and advertisers and is developing an “operating system” for agentic advertising that uses AI agents to automate campaign workflows from natural-language briefings to live campaigns. The piece explores how curation—packaging inventory with audience data and quality criteria—changes buying paths and raises questions about fees, prioritization, and transparency. While industry standards like Ads.txt, Sellers.json and the SupplyChain object improved visibility, economic and algorithmic decisioning remain opaque. The article stresses the ongoing divergence of publisher and advertiser interests and highlights the need to understand who curates, optimizes, measures, and governs automated decision rules.
Olyzon Launches Agentic Orchestration Platform for Advertising
Olyzon, an agentic orchestration platform for advertising, has launched its technology live in market, optimizing real advertising campaigns. The platform enables agencies and brands to orchestrate media budgets across CTV, YouTube, social, digital audio, and DOOH from a single interface, integrating with existing DSPs, SSPs, and measurement partners. It is positioned as a working example of a Unified Media Platform (UMP), connecting systems that previously operated in silos. Key integrations include Amazon DSP, DV360, The Trade Desk, Yahoo DSP, Universal Ads, Vibe, Spotify, PubMatic, Swivel.ai, DoubleVerify, Xpln, Lucid, and Innovid. The launch was announced at Advertising Week New York.
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