Amazon's DSP consolidates streaming ad inventory with purchase data

Executive overview

For decades, TV advertising was a guessing game. Amazon has changed that by sitting Amazon's DSP at the centre of 80% of streaming households — Netflix, Spotify, Roku, and more — and layering a decade of purchase behaviour from 300 million shoppers on top.

Other platforms infer intent. Amazon knows what you actually bought and when you'll run out. That data is first-party, cookie-independent, and gets more valuable every year.

The brands that adopt Amazon DSP early will build a playbook and audience advantage before inventory gets expensive.

The walled gardens collapsed

• Netflix, Spotify, and Roku all opened their ad inventory to Amazon's DSP by Q4 2025.
• Amazon's DSP now covers ~80% of streaming households through one platform.
• Advertisers can buy Netflix, Spotify, Roku, Disney+, and live sports (Thursday Night Football) in a single campaign.
• This mirrors Google's consolidation of fragmented search and directory ads in the early 2000s.
• Brands that moved early on Google Ads (2005–2010) compounded an enduring advantage; the same window is open now.

Amazon's data advantage

• Google targets by search intent; Facebook targets by engagement; Amazon targets by actual purchase history.
• First-party purchase data covers brand, price, frequency, and predicted replenishment — no cookies required.
• Works beyond Amazon products: shopping behaviour (e.g. who buys multimeters and electrical books) proxies intent for any business.
• Applies to hotels, software, professional services, education — anyone whose customer buys anything on Amazon.
• Amazon's data grows more precise each year as third-party cookies lose reliability elsewhere.

How programmatic buying works

• You set audience, budget, and creative in Amazon's DSP; software bids across inventory in real time.
• Amazon tracks the full funnel: impressions, clicks, site visits, add-to-cart, purchase.
• For e-commerce, the loop is fully closed — a specific ad can be tied to a specific sale.
• For non-e-commerce, Amazon Marketing Cloud (AMC) cross-references TV ad views with downstream conversions using household identity (TV, phone, and laptop on the same Wi-Fi).
• CTV (connected TV — Roku, Firestick, smart TV) suits brand and interactive formats; OTT on mobile suits direct-response. Amazon lets one campaign run both with context-optimised creative.

Who this is for

• E-commerce brands already winning on Amazon — consistent sales and strong reviews; DSP scales what's working.
• Mid-market brands with performance budgets — test a portion of spend; measure brand search lift, retargeting pool growth, and assisted conversions rather than last-click ROAS.
• Enterprise brands — a strategic decision on whether to consolidate streaming spend through DSP or diversify across DV360 and The Trade Desk.
• Small local businesses: master Meta and Google first; revisit DSP when budget matches the opportunity.
• Agency partnerships can lower the access threshold for brands below Amazon's direct minimums.

The timing case

• Streaming inventory is still relatively underpriced in many categories.
• Once more advertisers enter, CPMs rise — supply and demand.
• Amazon is investing in AI optimisation and live sports, signalling a long-term infrastructure play, not a test product.
• A niche or geographically focused budget can still move the needle; national scale is not required.