API Integration
Payment gateways, CRMs, and third-party platforms wired into your stack.
Overview
Most software projects fail at the seams — where your system meets someone else’s. BetaZen Infotech specialises in those seams: integrating payment gateways like Razorpay and Stripe, CRMs like Zoho and Salesforce, shipping and logistics APIs, ERPs, and government portals such as GST and e-invoicing endpoints. Every integration ships with webhook handling, retry queues for transient failures, idempotency safeguards, and reconciliation reports so no transaction silently disappears.
Retailers and service companies around Kolkata and across West Bengal rely on our integrations daily, as do product teams in other Indian metros and international clients whose stacks we join remotely.
What's included
- Payment gateway integration (Razorpay, Stripe, PayU)
- CRM & ERP connectors (Zoho, Salesforce, SAP B1)
- Shipping, SMS & WhatsApp API integrations
- GST, e-invoice & e-way bill API integration
- Webhook handling with retries & idempotency
- Reconciliation reports & failure alerting
Technologies we use
Why choose BetaZen
No dropped transactions
Retry queues and idempotency keys mean a flaky third-party outage delays a sync — it never loses a payment.
Faster than DIY
We’ve integrated these platforms before, so quirks that burn weeks of internal dev time are already solved.
Audit-ready trails
Every call, callback, and reconciliation run is logged, giving your accountant and auditor a clean paper trail.
How we work
Discovery & Strategy
We start by understanding your goals, users, and constraints, then map the fastest path to measurable outcomes.
Design & Architecture
We design the experience and the system architecture up front so what we build scales cleanly and predictably.
Agile Delivery
We ship in short, reviewable increments with continuous testing so you see working software early and often.
Launch & Support
We handle deployment, monitoring, and handover — and stay on to iterate, optimize, and support post-launch.
Frequently asked questions
Can you integrate Razorpay and GST e-invoicing for a West Bengal business?
Yes — this is one of our most common engagements for Kolkata and West Bengal companies. We handle Razorpay setup, webhook verification, and IRP e-invoice API integration, with invoices in INR and GST-compliant reporting built in.
The third-party API has poor documentation. Is that a problem?
It’s normal, honestly. We probe undocumented behaviour in a sandbox, write our own internal spec for the endpoints we use, and build defensively around inconsistencies — so your system stays stable even when theirs is quirky.
How long does a typical integration take?
A standard payment-gateway or CRM integration takes 1–3 weeks including testing and reconciliation reports. Multi-system projects with legacy ERPs run longer, and we always stage rollouts so live operations are never at risk.
Ready to get started with API Integration?
Book a free consultation and let's turn your idea into a shipped, scalable product.