In the final Fintech Stacks episode of the year, we break down how Fiserv quietly turned AI shopping into real payment infrastructure, why Coinbase is building financial pipes instead of chasing trading volume, and how Paychex keeps winning by doing absolutely nothing flashy. It’s a year-end look at fintech plumbing, platform strategy, and the underrated power of being boring.

We’ll be back January 5th, 2026.