
Shift4 Integration is an API integration suite enabling developers to embed payment processing and commerce functionality into third-party applications.
Shift4 Integration provides a comprehensive API and developer toolkit for embedding Shift4 payment processing, tokenization, and commerce features into third-party software applications. The suite includes RESTful APIs, SDKs, and pre-built connectors for popular platforms.
Developers use Shift4 Integration to add payment acceptance, subscription billing, and omni-channel commerce capabilities to their applications without building payment infrastructure from scratch. The platform supports web, mobile, and in-person payment flows with PCI-compliant tokenization.



Native payment processing integrated into Shopify, supporting cards, digital wallets, and local payment methods.


The Payments API Platform gives developers Flutterwave's payments APIs, SDKs, and sandbox.


Spreedly Payments Orchestration Platform connects merchants to payment services through one integration.


Online Checkout is Flutterwave's hosted and embedded checkout for enterprise online merchants.


Marketplace and platform payment infrastructure enabling multi-party payment routing, onboarding, and payouts.


In-person payments platform unifying online and offline payments with integrated hardware and developer-first software.

Developer APIs and SDKs for custom Square commerce apps and integrations.

Native payment processing integrated into Shopify, supporting cards, digital wallets, and local payment methods.

Enables businesses to accept payments globally in over 30 currencies through APIs, hosted checkout, and in-person POS.


Payments product for marketplaces and payfacs with seller onboarding and payouts.


Enterprise payment-orchestration platform that connects merchants to multiple PSPs and payment methods through one API.




Payment gateway platform for accepting online and mobile payments with global reach.


Afterpay for Business lets merchants accept Pay in 4 and monthly installments online, in-store, and in-app.


PayPal marketplace payment solution for split payments and merchant onboarding.

The Payments API Platform gives developers Flutterwave's payments APIs, SDKs, and sandbox.

Spreedly Payments Orchestration Platform connects merchants to payment services through one integration.

Online Checkout is Flutterwave's hosted and embedded checkout for enterprise online merchants.

Marketplace and platform payment infrastructure enabling multi-party payment routing, onboarding, and payouts.

In-person payments platform unifying online and offline payments with integrated hardware and developer-first software.

Enables businesses to accept payments globally in over 30 currencies through APIs, hosted checkout, and in-person POS.

Payments product for marketplaces and payfacs with seller onboarding and payouts.

Enterprise payment-orchestration platform that connects merchants to multiple PSPs and payment methods through one API.

Yuno Integrations connects payment providers through a unified integration layer.

Small business payment gateway streamlining digital payments securely.

Payment gateway platform for accepting online and mobile payments with global reach.

Afterpay for Business lets merchants accept Pay in 4 and monthly installments online, in-store, and in-app.

PayPal marketplace payment solution for split payments and merchant onboarding.
