Brex rolled into the corporate card market with a bang, blanketing San Francisco in advertising and leveraging small-city network effects to get founders to sign up other founders. But since its launch, the corporate card space has evolved into the incredibly competitive corporate spend market. How is Brex working to stay ahead of its rivals? We’ll chat with co-founder and CEO Henrique Dubugras and one of his backers, Y Combinator’s Anu Hariharan, to learn more.