When Starbucks launched its revolutionary mobile app-based loyalty program that allowed customers to pay, earn and redeem 'Stars', what percentage increase in revenue did they see in the first year of implementation?

Customer loyalty programs have transformed how food and beverage brands engage with consumers. Among these, some have achieved legendary status for their innovation and effectiveness. This trivia question focuses on one of the most successful customer loyalty programs in the food industry that fundamentally changed how consumers interact with the brand and has been studied extensively as a case study in retail digital transformation.

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11% revenue increase
5% revenue increase
22% revenue increase
3% revenue increase