
The bottom line
A default checkout often adds steps, omits wallets, and handles webhooks naively. Each has a direct cost: abandoned carts at the highest-intent moment, mobile buyers lost for want of one-tap payment, and the operational nightmare of orders whose paid/unpaid state does not match the payment provider. in Cambridge Done properly, payment integration lifts checkout conversion, keeps finance and operations sane through reliable reconciliation, and reduces fraud and chargeback exposure — typically a strong return given checkout is the highest-leverage point in the funnel.














