Proof, Not Just Promises
Marketing Case Studies: What Focused Investment Can Do
These are publicly available and independently researched marketing case studies from well known brands to demonstrate the power of marketing. They are general industry examples, not Aurex client work, and every figure below is cited to its original source.
Old Spice: "The Man Your Man Could Smell Like"
A full brand repositioning turned a stagnant body wash line into a cultural moment. Sales grew 107% and Old Spice became the number one men's body wash brand in the United States within a year of the campaign's launch.
Source: Wieden and Kennedy / Kinesis case study, 2010Cadbury Celebrations: "Shah Rukh Khan My Ad"
A hyper personalised, AI generated ad campaign localised to over 500 pincodes and 2,500 local business owners. It drove 35% sales growth for Cadbury Celebrations and won the Cannes Lions Creative Effectiveness Grand Prix.
Source: Ogilvy / Cannes Lions, 2023Airbnb: Referrals 2.0
Airbnb rebuilt its referral program for mobile in 2014, redesigning the contact selection experience and reward structure. The rebuild drove 900% year on year growth in first time bookings from referred users.
Source: Airbnb Engineering blogZomato: Personalised, Culture Led Marketing
Culturally driven social content and highly personalised push and performance marketing helped power 67% year on year revenue growth in the 2024 to 2025 financial year, alongside a 36% increase in repeat orders.
Source: Zomato / Eternal financial year 2024 to 2025 disclosuresReading The Pattern
What These Four Campaigns Have In Common
Four very different brands, four very different budgets, four very different decades. The mechanics underneath them are more similar than the headline numbers suggest, and they are the mechanics we build into our own planning.
None of them started with a channel
Old Spice did not begin with a media plan, it began with a repositioning decision about who the product was actually for. Airbnb did not begin with a referral budget, it began with the observation that its existing referral flow was broken on mobile. The channel was chosen after the problem was defined, which is the reverse of how most campaigns get briefed.
Personalisation did the heavy lifting in two of the four
Cadbury localised a single celebrity ad to over 500 pincodes and 2,500 local business owners. Zomato paired culturally specific social content with personalised push and performance marketing. In both cases the creative idea was inseparable from the targeting infrastructure that delivered it, and neither would have worked as a broadcast campaign.
Every one of them was measured against a business number
Sales growth, first time bookings, year on year revenue, repeat order rate. Not impressions, not reach, not engagement rate. The metrics these campaigns are remembered by are the ones that appear in a P&L, which is why the results survived long enough to become case studies at all.
The results compounded rather than spiked
Old Spice became the category leader within a year rather than a week. Zomato's 67% revenue growth came alongside a 36% increase in repeat orders, meaning the marketing built a returning customer base rather than renting a one-off spike in demand. Campaigns designed for a single quarter rarely produce numbers like these.
What this means for a business with a normal budget
None of these brands succeeded because of budget alone, and none of these numbers are reproducible on demand. What is transferable is the sequence: define the actual problem, choose the channel that fits it, attach a business metric before launch and give the work long enough to compound. That sequence is what our nine step process is built around, and you can model what it might return for your own spend on the ROI calculator.