Payment integration go-live checklist for Shopify
The checks to run before a payment integration takes real money on Shopify: accounts, credentials, server-side confirmation, webhooks, refunds, tests and monitoring.
Guides
Guides for Shopify, payments and integrations
Practical guides on Shopify development, payment integrations, webhooks and APIs, written by the Checkout Flow team for merchants and their teams.
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How to choose a Shopify payment provider (and what if yours isn’t available)
Shopify Payments, third-party providers or extra methods: six questions to choose, and your options when your provider isn’t in Shopify.
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Webhook vs API: what’s the difference, with e-commerce examples
An API is your system asking; a webhook is the other system telling you. Why reliable integrations use both, and how.
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Why are payments refused on my Shopify store?
Store-wide failures or one customer’s card: how to tell them apart in a few minutes, and what to fix in each case.
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