Programmatic buying in CTV: how it works in India

Programmatic CTV buying is the automated purchase of connected TV ad inventory through technology platforms — DSPs, SSPs, and auction-based deal structures — rather than direct human negotiation for every impression. In India, the majority of CTV programmatic spend flows through agency trading desks using DV360, with Amazon DSP and The Trade Desk serving specific use cases. Understanding the mechanics — from how deal types differ to how a bid request travels from publisher to buyer in milliseconds — is essential for anyone buying or selling CTV in India.

Why programmatic CTV is different from display programmatic

CTV programmatic runs on the same foundational technology as display — OpenRTB, DSPs, SSPs, deal IDs — but the environment is different in ways that matter:

• No header bidding via JavaScript. CTV apps run on native TV operating systems. There is no browser, so the standard JS header bidding wrapper used in display does not work. Publishers use server-side bidding or sequential waterfall instead.
• VAST-only creatives. CTV does not support rich media, HTML5 banners, or interactive display formats. All ads are delivered as VAST video — typically 15s or 30s non-skippable.
• Household-level targeting, not user-level. CTV devices are shared screens. Identity resolution is based on household IDs (ACR data, login inference) rather than individual cookies or device IDs.
• Higher CPMs, smaller scale. India CTV CPMs run Rs 80–300 depending on deal type and content — significantly above display. But reach is limited by smart TV penetration (~20M connected households vs 600M+ internet users).
• Premium content adjacency matters. A CTV ad in live IPL cricket commands different attention — and different price — than the same VAST tag running in a FAST channel. The content context is a first-class variable.

How a programmatic CTV impression is bought

A simplified flow for a PMP deal in India CTV:

1. A viewer starts watching content on a CTV app (e.g., SonyLIV on a Samsung Smart TV).
2. An ad break triggers. The publisher's ad server (Google Ad Manager) calls the SSP (Magnite or PubMatic) to fill the slot.
3. The SSP sends a bid request to connected DSPs via OpenRTB. The request includes deal IDs for any active PMP deals, plus impression metadata (content type, device, geo, audience signals).
4. The buyer's DSP (DV360, Amazon DSP, TTD) evaluates the bid request, checks for matching deal IDs and campaign targeting, and responds with a bid within ~100ms.
5. The SSP runs the auction, selects the winning bid, and returns a VAST URL to the publisher's ad server.
6. The VAST ad is served to the viewer's TV. A server-side beacon fires the impression confirmation back to the DSP.

This entire process happens before the ad break begins — typically during a 500ms pre-roll buffer. On CTV, server-side ad insertion (SSAI) stitches the ad into the video stream at the server level, eliminating client-side latency and ad blockers.

The India programmatic buying landscape

India CTV programmatic is dominated by holding company trading desks. GroupM's Xaxis (WPP) is the largest single programmatic buyer in India CTV, operating DV360 for its agency network (Mindshare, Wavemaker, MediaCom, EssenceMediacom). Publicis Media Exchange (PMX) is the second major holding company desk. Independent trading desks (MiQ, iProspect) serve mid-market and D2C brands. A growing segment of India D2C brands (Meesho, Blinkit, Swiggy) run CTV programmatic in-house through DV360 or Google Ads.

On the sell side, Magnite and PubMatic are the dominant SSPs for India CTV publishers. Google Ad Manager is the primary ad server. SSAI is used by premium publishers for live and premium VOD content.

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