Payment flows are sensitive user journeys, so every UI decision matters. While integrating Primer.io SDK, I prioritized clear loading states, errors, and post-payment confirmations.
A major improvement came from handling edge cases early: network failures, payment retries, and inconsistent callback timing.
I also aligned payment status feedback with analytics events so product teams could monitor completion rates and drop-offs.
When payment integrations are done well, users feel confident and the business sees better conversion outcomes.