Personalised CTV advertising serves different ad creative or ad messages to different audience segments, based on data about who is watching. The same TV ad break might show a first-time car buyer a financing offer, while showing a repeat car buyer a loyalty upgrade message — all without either viewer knowing the other saw something different. On CTV, personalisation operates at the household level (IP address, device ID) rather than the individual level, because a TV screen is a shared device in most Indian households. This creates powerful targeting but also important limits.
What data drives CTV personalisation
CTV personalisation uses several data layers:
Platform first-party data: JioCinema knows its registered users' viewing history, content preferences, and in some cases their Jio telecom relationship (location, device usage, subscription tier). Hotstar knows its subscribers' content consumption, subscription status, and Disney+ loyalty data. YouTube knows Google account data — search history, app usage, location. These platform data sets are the richest and most reliable for CTV personalisation, but they are walled — each platform uses its own data for its own targeting, and the data does not flow programmatically to advertisers or third-party DSPs.
IP-based household data: In programmatic CTV buying, the household's IP address is the primary identifier. IP-based data providers map IP addresses to household attributes — demographics, purchase intent categories, geography, household composition. This is less accurate than platform first-party data but works across platforms where IP data is available.
CRM / first-party data match: Advertisers can match their own customer data to CTV audiences. A bank can upload a CRM file and match it to Hotstar or YouTube audiences — showing a personalised ad ("Your pre-approved limit has increased") to existing customers while showing a prospecting ad to non-customers. This requires data matching infrastructure (clean rooms, hashed email or phone matching).
ACR (Automatic Content Recognition) data: Samsung Ads and LG Ads use ACR to personalise based on what the TV has been displaying — regardless of platform. A household that has been watching competitor brand ads gets a conquest message; a household watching cooking content gets a food brand's product-relevant creative. ACR personalisation is platform-specific (Samsung or LG TVs only) but uniquely powerful because it captures cross-platform viewing behaviour.
Household targeting and co-viewing limitations
CTV personalisation targets households, not individuals. In India, the average CTV household has 3–4 viewers. A pre-roll served to a "25–34 urban male" household segment may reach a family of five — the target individual is one of them, the others are not. This co-viewing reality means personalised CTV ads should be designed for relevance to the household type rather than a specific individual.
An auto brand targeting "potential car buyers" on CTV is likely reaching a household where multiple members may be involved in a car purchase decision. Personalisation for family decision-making contexts — showing multiple product benefits that address different household members' concerns — often outperforms hyper-specific individual targeting on CTV.
Privacy and consent in India CTV personalisation
India's Digital Personal Data Protection Act (DPDP Act, 2023) requires consent for processing personal data, including for personalised advertising. The practical implications for CTV are still developing as implementation guidance is issued. Platform first-party data usage (platform using its own registered user data to personalise ads) sits within the consent relationships users have with the platform. Third-party data usage in programmatic buying is more complex and requires monitoring as DPDP guidance evolves.
Personalisation vs broad reach on CTV
For most India CTV campaigns, personalisation and broad reach are complementary, not competing. Start with broad audience targeting to build awareness and frequency. Use personalisation for specific moments: retargeting viewers who scanned a QR code but did not convert; showing loyalty messaging to existing customers identified via CRM match; geographic personalisation for city-specific offers. Personalisation is a precision tool used within a broader campaign framework, not a replacement for reach-based CTV buying.