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API Integration & Development

Seamless API Integration for Connected Business Systems

We design, develop, and integrate RESTful & GraphQL APIs that connect your software with third-party platforms, payment gateways, CRMs, ERPs, and any external service. From custom API development to complex multi-system orchestration — we make your systems talk to each other.

api integration api development rest api graphql api third-party integration payment gateway integration crm integration erp integration
500+ Projects
15+ Years Exp.
98% Satisfaction
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What We Offer

Comprehensive api integration solutions tailored to your business needs.

Third-Party Integration

Connect with Stripe, PayPal, Razorpay, Twilio, SendGrid, Google APIs, social platforms, and 200+ services.

Custom API Development

Build secure, documented, and versioned RESTful or GraphQL APIs for your web and mobile applications.

Data Synchronization

Real-time and batch sync between CRM, ERP, inventory, accounting, and e-commerce platforms.

Secure Authentication

OAuth 2.0, JWT, API key management, rate limiting, and CORS configuration for secure API access.

Webhooks & Events

Event-driven architecture with webhook listeners, message queues, and real-time data pipelines.

API Documentation

Swagger/OpenAPI documentation, Postman collections, and developer portal setup for your APIs.

How We Work

Our Development Process

01
API Audit & Planning

Map your existing systems, identify integration points, and design the API architecture.

02
API Design & Contracts

Define endpoints, data models, authentication, and versioning strategy with OpenAPI specs.

03
Development & Testing

Build APIs with automated testing, load testing, and comprehensive error handling.

04
Deployment & Monitoring

Deploy with API gateway, rate limiting, logging, and uptime monitoring dashboards.

Technologies We Use

Built with the latest and most reliable technologies for performance and scalability.

Node.js Python Laravel Express.js FastAPI GraphQL REST Swagger Postman RabbitMQ Redis WebSocket gRPC Docker

Why Choose D&D Technology?

We don't just build software — we become your long-term technology partner.

200+ Integrations Done
200+ Integrations Done

Payment, shipping, CRM, ERP, social media, marketing — we have integrated them all.

API-First Approach
API-First Approach

We design APIs before building UIs — ensuring clean contracts and easy scaling.

Security-First Design
Security-First Design

OAuth, JWT, rate limiting, input validation, and encryption built into every API.

Complete Documentation
Complete Documentation

Swagger docs, Postman collections, and developer guides so your team can self-serve.

API Integration

Frequently Asked Questions

Common questions about our api integration services.

Ask a Question

We integrate any API — payment gateways (Stripe, PayPal, Razorpay), CRMs (Salesforce, HubSpot), ERPs (SAP, Odoo), shipping (Shiprocket, FedEx), marketing (Mailchimp, SendGrid), social media, and custom third-party systems.

Yes. We design and build RESTful and GraphQL APIs with proper authentication, versioning, rate limiting, and comprehensive documentation.

We implement OAuth 2.0, JWT tokens, API key management, HTTPS enforcement, rate limiting, input validation, CORS policies, and regular security audits.

Absolutely. We build middleware and adapters to connect legacy systems with modern APIs, enabling gradual modernization without disrupting existing workflows.

Simple integrations start from $500, multi-system integrations from $2,000, and enterprise API platforms from $8,000+. Contact us for a detailed estimate.

Get Started
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Let's build something amazing together. Get a free consultation today.

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