Netflix reported its first subscriber loss in over a decade last month. Q1 2022 net subscriber adds were negative 200,000 — the company had guided for 2.5 million adds. Management cited a combination of factors: account sharing, market saturation in developed markets, the password-sharing crackdown that was supposed to be a growth driver but is proving more complicated to implement than anticipated, and competitive pressure from the expanding SVOD landscape.
The market response was severe — shares fell roughly 35% after the earnings report. More relevant for the advertising industry: within weeks of the earnings call, Netflix confirmed in statements to the Wall Street Journal that it was actively exploring an ad-supported subscription tier, and had held preliminary conversations with potential technology partners. The Wall Street Journal subsequently reported Microsoft as the leading partner candidate, which is where this story gets structurally interesting for the programmatic industry.
Why Microsoft, Not Google or TTD
The partner selection is not arbitrary. Google, through YouTube and DV360, operates the largest CTV ad infrastructure in existence. The Trade Desk powers a significant portion of independent programmatic CTV buying. Either would have been the obvious technical choice for a company entering advertising with a need for instant scale.
The reported Microsoft choice signals something beyond technical capability. Microsoft owns LinkedIn, which carries one of the most professionally credentialed first-party data sets in advertising. Microsoft’s M12 venture arm has invested in identity resolution infrastructure. The Xandr acquisition, completed in early 2022 after AT&T divested, gives Microsoft a mature ad server and DSP stack. And critically, Microsoft has no competing streaming property — no YouTube, no Peacock, no Paramount+. Partnering with Google would mean feeding infrastructure and audience data to a direct competitor for Netflix’s streaming revenue. Partnering with Microsoft involves no such competitive conflict.
The Financial Times reporting on the Netflix-Microsoft discussions frames the identity infrastructure as a core component of the deal — Microsoft’s ability to extend LinkedIn-anchored professional identity into streaming ad targeting. For media buyers, this matters: if Netflix’s ad product is identity-anchored through Microsoft’s enterprise data assets, the targeting depth will be different from what Amazon or Hulu offer. It is a distinct audience intelligence layer tied to professional identity rather than purchase intent or entertainment consumption.
What 220 Million Subscribers as CTV Inventory Means
The scale is significant. Netflix currently has approximately 220 million global subscribers, with a heavy concentration in developed markets — the US, Europe, and Australia. The ad-supported tier will launch in a subset of markets, and not every subscriber will migrate from ad-free. But even a 20% adoption rate in top markets would create an inventory pool comparable in scale to Hulu’s ad-supported base, which has been built over a decade.
The quality signal is strong. Netflix content — prestige dramas, original films, major licensed sports (still limited but growing) — consistently tops viewing time and critical attention in the streaming landscape. Advertising adjacency to premium content has historically commanded CPM premiums of 40-80% over general CTV inventory. The Netflix content library represents the kind of environment where attention metrics matter: viewers who have specifically chosen to watch a program are qualitatively different from viewers scrolling past preroll.
The limitation, at least in early iterations of the product, will almost certainly be targeting depth. Netflix has accumulated enormous behavioral viewing data, but behavioral data within a walled garden does not immediately translate into actionable programmatic targeting infrastructure. Building the segment taxonomy, connecting it to ad decisioning, integrating third-party identity resolution, and enabling audience extension beyond the Netflix environment takes time. Early reports suggest the first iteration of Netflix advertising will offer relatively limited targeting — likely broad demographic and genre-based cuts, not the behavioral precision of Facebook or Amazon.
How This Changes the CTV Competitive Landscape
The CTV inventory landscape was already expanding rapidly before Netflix’s involvement — Peacock, Paramount+, HBO Max (with advertising via Discovery+), and the resurgent free ad-supported TV (FAST) channels like Tubi, Pluto TV, and Samsung TV Plus have added significant inventory volume in the past 18 months. Netflix entering advertising is not just incremental inventory addition. It is a reordering of the prestige tier.
Currently, the highest-CPM CTV inventory in the programmatic market is a combination of Disney/Hulu (through Disney Streaming Services), NBC’s Peacock Premium, and Paramount+. YouTube CTV occupies a distinct tier as a scale player with broad reach but lower perceived content prestige than premium subscription streaming. Netflix entering advertising with a premium content library and potentially Microsoft-anchored identity infrastructure positions directly against Disney in the premium tier.
For advertisers who have been trying to reach upscale streaming audiences at scale — specifically the demographic that cancelled cable, subscribes to multiple streaming services, and is largely unreachable through linear television — Netflix advertising creates an audience access option that has not existed. The question of CPM is unresolved: early industry speculation ranges from $60-80 for premium placements, which is competitive with high-end Hulu inventory but not dramatically different from what top-tier CTV already costs.
What Media Buyers Should Be Doing Now
The Netflix ad product is not live, and specific details of targeting capabilities, minimum commitments, and DSP access are not confirmed. But the planning work is worth starting now.
First, map which of your campaign audiences have high Netflix viewership overlap. Tools like YouGov, Comscore, and Nielsen’s streaming measurement products can provide audience composition data that indicates Netflix audience index for your target demos. This will inform how much incremental reach Netflix advertising offers versus your current CTV mix.
Second, clarify your current CTV CPM tolerance and measurement framework. Netflix advertising will likely launch with limited attribution capabilities — standard streaming constraints around third-party measurement access and conversion tracking apply. Understanding what you can and cannot measure before the product is live helps set appropriate expectations with clients and internal stakeholders.
Third, begin the conversation with Microsoft Advertising about their ad platform roadmap. If the Microsoft partnership develops as reported, Microsoft Advertising will be the gateway to Netflix inventory. Advertisers who have existing Microsoft Advertising relationships and are already buying on the platform will likely have earlier access and potentially preferential terms.
FAQ
Why did Netflix decide to add an ad-supported tier after years of opposition? Subscriber growth has stalled in key markets, and the post-pandemic consumption bump has reversed. An ad-supported tier at a lower price point addresses two problems simultaneously: it offers a more affordable subscription option that can win back churned subscribers sensitive to price, and it opens a new revenue stream that does not require net subscriber growth to increase revenue.
What role will Microsoft play in Netflix advertising? Reports indicate Microsoft will serve as the primary technology and sales partner for Netflix’s ad-supported tier, providing the ad server infrastructure, programmatic marketplace access, and potentially first-party identity capabilities from Microsoft’s LinkedIn and enterprise data assets. The arrangement has not been formally announced or confirmed with full technical details.
Will Netflix advertising be available programmatically at launch? This is unconfirmed. Early-stage streaming ad products typically launch with direct-sold inventory and limited programmatic access, expanding programmatic availability as the product matures. Given the Microsoft partnership and Xandr’s existing DSP integrations, programmatic access may be available earlier than typical streaming product timelines.
How does Netflix advertising compare to Hulu or Disney+ advertising? The products differ in content mix, audience composition, and targeting infrastructure maturity. Hulu has over a decade of advertising infrastructure development and robust first-party audience data. Disney+ advertising benefits from Disney’s multi-property first-party data including theme parks and merchandise. Netflix advertising will launch with a premium content library but less mature advertising infrastructure than either competitor.