Lessons
UTS Original · SeriesEvery Under The Stack series and episode in one place. Practical retail technology lessons from the people building modern commerce.
The Payment Complex
Series · 2 episodes · new episode soonYears of payment decisions, untangled. How retailers inherited complexity they never designed — and how they take back control.
The Payment Complex · Ep 1
The Payment Complex: Nobody Designed This
9:39No. 00027 moments
Yuriy Kostenko · Flagship Advisory · 11 Aug 2026
The Payment Complex · Ep 2
The Payment Complex: Consolidate or Orchestrate
06:12No. 00042 moments
Yuriy Kostenko · Flagship Advisory · 1 Sep 2026
Next episode
The Payment Complex · Ep 3
Lands 15 Sep 2026
The Checkout Test
Series · 2 episodesInside the hidden world of payment testing — why manual testing doesn't scale, and how automation protects revenue at the till.
Featuring
Yuriy Kostenko
Flagship Advisory
David Frank
PaytestLab