If you've ever been the engineer assigned to "integrate a gift card API" for a marketing or HR team, you already know the painful part isn't the integration. It's the procurement decision your non-technical stakeholders made before they looped you in. So here's a developer-first read on the five gift card / rewards / payouts platforms most B2B teams shortlist in 2026: Tremendous, Tango Card, Runa, Giftbit, and GIFQ (full disclosure: I work at GIFQ, and I'm going to argue we're the best fit for an engineering-led integration — and tell you the narrow cases where we're not). What you actually care about as the implementer Forget "merchant catalog size" for a second. The questions that determine whether this integration ships on time: Is the API modern (REST + JSON, webhooks, idempotency keys, sane error envelopes)? Is there a sandbox you can hit without a sales call? How granular is the order/redemption status data? Can you reconcile programmatically, or are you exporting CSVs from a dashboard at month-end?…