The first link is Cadbury Celebrations' own channel. The film is in Hindi. Shah Rukh Khan is telling you to shop at your local store this Diwali, and then he names it. The case film explains the mechanic in English, and you want it for this one.
Diwali is the biggest gifting season in India, and it is when small neighbourhood shops make the money that carries them through the year. In 2021 those shops were coming out of the pandemic in bad shape, while spending had moved to the large online players who could afford to advertise their way through it.
Cadbury looked at that and found the connection most brands would have missed. Those shops are not a worthy cause sitting outside the business. They are the business. Cadbury Celebrations reaches Indian consumers through a distribution network of millions of tiny retailers. If the corner store has a bad Diwali, so does Cadbury. Helping them is not charity, it is supply chain maintenance.
The second insight is about celebrity. Cadbury had Shah Rukh Khan, arguably the most recognised film star on the planet, and a national-scale asset like that can only say one national-scale thing. Meanwhile the thing a small shop actually needs is not a national message. It is somebody saying its name.
Let Shah Rukh Khan advertise your shop.
Not Cadbury's shop. Yours. The film is built so that the star turns to camera and names a specific store in a specific neighbourhood, and the version served to you names the store nearest you. Then a public tool let any shop owner in the country generate their own, free, with their own name in the star's mouth.
The line is the strategy stated out loud, which is a thing we always admire. It tells you the brand knows exactly what it is giving away.
Rephrase.ai built a synthetic model of Khan's face and voice, trained with his consent, so that a single performance could be re-cut to say thousands of different shop names with the mouth and intonation matching. Ogilvy and Wavemaker then wired it to location data: the ad you were served on YouTube or Meta named businesses in your own pincode, so a viewer in one part of the country and a viewer in another were watching materially different films.
The seeded version covered more than two thousand named grocery, electronics, clothing, furniture and jewellery stores across hundreds of pincodes. Then came the part that turned it from a clever media buy into a movement: NotJustACadburyAd.com, a self-serve microsite where a shopkeeper, or a customer who loved a shop, could type a name and generate the ad themselves. More than 130,000 ads were made this way.
Note what Cadbury is doing with its own airtime here. It bought the media, produced the asset, and then spent it naming other people's businesses. Its own product appears, but the payload of the ad is somebody else's shop sign.
The stupid: take the single most valuable and most tightly controlled asset you have, the face and voice of a global film star, and hand the controls to strangers. Let a machine put words in his mouth that no one at the agency or the client has read. Publish a tool that will generate, unsupervised and at scale, thousands of endorsements from a man whose personal endorsement normally costs a fortune. Then spend your Diwali budget promoting shops you do not own.
The smart: generosity that is also distribution. Every shopkeeper who generated an ad became a Cadbury advocate at the exact point of sale where the Diwali gifting decision gets made, and did the sharing themselves, for free, with real enthusiasm, because it was their name on it. The brand converted media spend into retailer goodwill and retailer goodwill into shelf space. And it is culturally precise: at Diwali, Indians traditionally gift sweets, not chocolate, so Cadbury's real job is to get itself into the ritual. Being the brand that stood up for your neighbourhood shop is a far better argument for that than any product claim.
The steal: find the thing your business genuinely depends on that nobody else is looking after, and look after it in public. Not a cause you picked from a list, the one already load-bearing in your own supply chain. It is the rare good deed that a finance director can also sign off on.
This is also the most useful example we know of synthetic media used well, which matters because most of the category is grim. The test is simple: is the technology creating something that could not otherwise exist, or is it just replacing a person more cheaply? Here it is unambiguously the first. Nobody was ever going to shoot two thousand versions of a Shah Rukh Khan film to name two thousand corner shops. The technology did not take work away from anyone, it made a scale of personal attention that had never been possible, and it pointed that attention at the smallest players in the market rather than the largest.
The other thing worth stealing is the honesty of the line. "This is not just a Cadbury ad" is a brand naming its own self-interest before you can accuse it of hiding it. Say the quiet part first and nobody gets to catch you at it later.
Straight talk: the 35% growth figure comes from the Creative Effectiveness entry, so it is client-submitted, and Cannes does not publish the underlying data. It carries more weight than the usual case-film number for one specific reason: the Creative Effectiveness Lions are judged on the business case rather than the craft, entries must already have won or been shortlisted for a Lion, and a jury reads the evidence. This one took the Grand Prix in that category. It is still a claim, but it is a claim that has been through the toughest room in the awards circuit.
The store counts move around depending on the source, because different write-ups count seeded stores, participating retailers and generated ads as if they were the same number. We have used the two that are consistently reported: two thousand plus stores in the seeded media run, and more than 130,000 ads created through the public tool.
Winning Titanium and then coming back a year later to win Creative Effectiveness is the combination the industry claims to want and almost never produces: the jury that rewards novelty and the jury that rewards results agreeing about the same piece of work.
Client: Cadbury Celebrations, Mondelez India
Agency: Ogilvy India, Mumbai
Chief creative officers: Kainaz Karmakar, Harshad Rajadhyaksha, Sukesh Nayak
Media: Wavemaker India, with Google and YouTube
Technology: Rephrase.ai, synthetic face and voice
Talent: Shah Rukh Khan
Language: Hindi, with regional variants
Contagious, Creative Effectiveness winners 2023
Ad Age, the Creative Effectiveness Grand Prix
Adgully, India's first Titanium Lion
WPP, the campaign write-up and how the tech worked
Ogilvy, the agency's own case page
Wavemaker, the media side of it
The devices behind this one, from our library of ways in: