Digital Experience & Growth
Payment Gateway Integration
Integration of payment gateways such as Razorpay, PayU, Cashfree, CCAvenue and Stripe into websites, apps and platforms, with secure webhooks, refunds, reconciliation and routing across more than one provider.
Capability overview
What payment gateway integration involves
A payment integration that works in testing can still lose money in production: orders marked unpaid when the customer was charged, duplicate refunds, webhooks spoofed by attackers or settlement reports that never match the books. Payment gateway integration done properly handles these cases deliberately.
We integrate Indian gateways such as Razorpay, PayU, Cashfree and CCAvenue for UPI, cards, net banking, EMI and wallets, and Stripe or PayPal for international customers. Integrations verify webhook signatures, handle idempotency, reconcile payments against orders daily and support routing between gateways to improve success rates.
What is included
What the integration covers
Checkout integration
Hosted, embedded or native SDK checkout for web and mobile apps, including UPI intent flows on Android and iOS.
Server-side verification
Payment status confirmed on the server through signature checks and status APIs, never trusted from the browser alone.
Webhooks and idempotency
Signed webhooks processed once, with retries and out-of-order events handled safely.
Refunds and disputes
Full and partial refunds from admin screens, with chargeback notifications routed to the right team.
Reconciliation
Daily matching of orders, payments, refunds, fees and bank settlements, with exceptions listed for finance.
How we work
How we deliver payment gateway integration
Gateway selection
Providers compared on payment methods, fees, settlement cycles, international support and platform compatibility.
Merchant onboarding support
Help with KYC documentation, website compliance pages and business category approval.
Integration build
Payment flows, webhooks, refunds and admin views developed in sandbox environments.
Failure scenario testing
Timeouts, dropped callbacks, duplicate notifications and partial refunds tested explicitly.
Go-live monitoring
Success rates and reconciliation exceptions watched closely during the first weeks of live payments.
Related capabilities
Related capabilities in E-Commerce & Digital Commerce
Subscription Commerce
Recurring revenue models for products and services, such as replenishment boxes, memberships and software plans, with recurring payments through UPI AutoPay, card mandates and billing platforms.
Order Management Integration
Connecting orders from your website, marketplaces and stores to order management, warehouse, shipping and accounting systems, so every order is routed, fulfilled, tracked and invoiced without manual re-entry.
Inventory Integration
Synchronising stock levels across warehouses, stores, marketplaces and your website so customers see accurate availability, overselling stops and slow-moving stock becomes visible early.
Commerce Platform Integration
Connecting your commerce platform to the wider business stack, including ERP, CRM, marketing automation, accounting, customer support and analytics, so customer, product and financial data stays consistent.
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Explore connected pages
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Questions & answers
Questions about Payment Gateway Integration
Cannot find what you need? Our team responds to technical and commercial questions within one business day.
Ask a questionUsually because the customer closed the browser before redirecting back and the system relied only on that redirect. Webhook handling and status polling fix this by confirming payments on the server.
Higher-volume businesses often do, to route transactions to the provider with better success rates for a payment method and to keep taking payments during a provider outage.
Using hosted or tokenised checkout from a compliant gateway greatly reduces your PCI scope because card data never touches your servers. A self-assessment questionnaire is still typically required.
Integration is fixed price per gateway and platform. Multi-gateway routing and automated reconciliation are quoted as separate modules.
Next step
Discuss payment gateway integration with Acmez
Share what you need to change, build, integrate or support. We will map the practical next step.