Tapjoy, an advertising and app monetization company, moved to SingleStore from MySQL due to performance issues with their workload running on MySQL. The team assessed alternatives, considering factors such as ACID compliance, scalability, 10x-capability, and drop-in replacement. After testing, they found that SingleStore met all their requirements, offering huge performance gains, including a 55 times faster data point sum for finance operations and an 1500x improvement in monthly reporting time. SingleStore's design from scratch addressed Tapjoy's demanding scalability needs, making it a clear winner in load tests. The company has since adopted SingleStore for several use cases, demonstrating its value in meeting their challenging data issues.