The Architecture Behind a 6,000% Throughput...

Hertz was a nearly $10 billion company running on technology that its own CEO would publicly call "30 to 40 years old." Underneath it: 1,800 IT systems, six database vendors, 30 rental processing systems, and a core built on IBM AS/400 mainframes running COBOL. Adding a single new product required 18 separate system changes. Meanwhile, Uber and Lyft had captured over 70% of corporate ground transportation spending on expense reports — up from near zero just a few years earlier. The legacy platfo