There is an old cartographer’s anxiety about drawing maps of territories that keep shifting beneath your feet. Indian digital advertising finds itself in precisely that predicament today. The third-party cookie — that deceptively simple piece of code that quietly powered two decades of targeted advertising — is not just fading; it is being actively dismantled by the very platforms that once championed it. Google’s long, complicated farewell to third-party cookies in Chrome, combined with Apple’s aggressive App Tracking Transparency framework and a growing chorus of data protection regulation globally, has set the stage for what may be the most consequential infrastructure overhaul in the history of digital marketing. For India’s adtech ecosystem — sprawling, inventive, deeply mobile-first, and increasingly programmatic — the question is no longer whether the cookie crumbles, but what gets baked in its place.
The Indian digital advertising market, which crossed the ₹50,000 crore threshold and continues its upward trajectory, was never as cookie-dependent as its Western counterparts. Mobile advertising dominates here, where in-app environments have always operated outside the cookie paradigm. Yet the identity problem runs just as deep. Advertisers still struggle to build coherent, deduplicated audience profiles across the fragmented landscape of apps, browsers, connected TVs, and OTT platforms that define the modern Indian media consumption habit. A user who watches a cricket match on Hotstar, reads a vernacular news portal, and shops on Meesho in the same evening is, to most programmatic systems, effectively three different strangers. This fragmentation is not merely a targeting inconvenience — it represents a fundamental failure to close the attribution loop, and it costs brands both efficiency and insight. The irony is that India has one of the richest digital identity foundations in the world through the JAM trinity — Jan Dhan, Aadhaar, Mobile — yet the adtech industry has barely scratched the surface of building privacy-safe, consent-led identity graphs that leverage what is already there.
What is emerging in response is a multi-pronged identity resolution architecture, and the ambition behind it is genuinely impressive. Homegrown platforms such as InMobi, mDhil, Times Internet, and a new generation of data clean room providers are investing in first-party data strategies that go beyond simple login-based identifiers. Telecom data partnerships — where carriers like Jio and Airtel sit on extraordinary household-level behavioural signals — are being explored as the backbone of privacy-compliant audience segments. Unified ID solutions inspired by global frameworks like Unified ID 2.0 are being localised for Indian compliance requirements, mapping consumer consent to hashed email and phone identifiers that persist without any cookies. Contextual targeting is experiencing a renaissance, powered by natural language processing tailored to India’s dozen-plus major languages, enabling brands to match message to moment at scale across vernacular content ecosystems. There is also growing interest in data clean rooms — secure, neutral environments where publishers and advertisers can collaborate on audience insights without directly exchanging raw data — as a structural alternative to the messy ID-matching gymnastics of the past. Taken together, these efforts suggest an industry that is not simply waiting out a disruption but actively trying to architect its way through one.
The road ahead, however, is neither straight nor uncontested. India’s Digital Personal Data Protection Act introduces a consent framework that is still being interpreted through its implementation rules, and the adtech industry will need to build infrastructure compliant with a regulatory environment that is, itself, in motion. Interoperability between identity solutions remains a glaring gap — a marketplace where a dozen ID graphs all claim coverage but cannot speak to each other is barely an improvement on the fragmentation it seeks to solve. Measurement, too, remains a contested frontier: without a common identity spine, cross-screen attribution across CTV, mobile, and open web will continue to produce the kind of partial, inconsistent reporting that frustrates media planners and undermines CFO confidence in digital investment. What India’s adtech ecosystem ultimately needs is not just technical innovation — though that is necessary — but the kind of collaborative industry governance that has historically been difficult to achieve. The shift from third-party cookies to a sustainable identity infrastructure is less a technology problem than a trust problem. Brands, publishers, platforms, and consumers will all need to believe that the new system is more honest than the old one. That is a harder brief to fulfil than any algorithm. But if the Indian adtech industry, known for its improvisation and its ambition in equal measure, can crack identity resolution on its own terms — built for mobile-first, multilingual, privacy-sensitive realities — it will not just have survived the post-cookie era. It will have written a playbook worth the rest of the world reading.
