API Integration Services

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Tired of juggling too many apps that don’t “talk” to each other? Our API integration services connect your tools, automate workflows, and save you time.

Whether you need custom API integration services, payment gateway integration, or CRM and ERP API solutions, we make everything work together seamlessly.

End-to-End API Integration Services for Your Business

We help businesses like yours connect different software, apps, and platforms so they work as one. Our services are designed to reduce manual tasks, improve data accuracy, and boost productivity.

API Integration Services

Our Key API Integration Services

Every business has different needs. That’s why we offer a range of integration services to make sure your website, apps, and tools work together without friction.

Website & Web App API Integration

Connect your website or web apps with third-party tools for a smoother user experience.

Mobile App API Integration

Make your mobile apps smarter with secure, real-time connections to APIs.

Payment Gateway Integration

Enable fast, secure, and seamless online payments.

CRM & ERP Integration

Sync customer data, sales, and operations in one place.

Cloud API Integration

Connect with cloud platforms like AWS, Google Cloud, or Azure for scalable performance.

From custom API integration services to enterprise-level solutions, we make your systems smarter, faster, and easier to manage.

Why Choose Our API Integration Services?

When it comes to connecting your business systems, you need more than just developers; you need API integration experts who understand security, scalability, and your unique business goals.

Proven Expertise

Our team has delivered successful projects, from payment gateway integration to complex CRM and ERP integrations.

Custom Solutions

No two businesses are the same. We provide custom integration services designed to fit your exact needs.

End-to-End Support

From planning to development and ongoing support, we’re with you at every step.

Native Development

Secure & Scalable

We prioritize security and build secure and scalable API integration solutions that grow with your business.

Local & Global Reach

As a trusted API company in Kolkata serving businesses across India, we bring both local insight and global best practices.

API Integration Services for Every Industry

No matter what industry you’re in, our services help you work smarter by connecting the platforms you rely on every day.

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Ecommerce

Power up your store with payment gateway API integration and automated order fulfillment.

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Healthcare

Secure for healthcare platforms, ensuring compliance and better patient data management.

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Finance

Reliable integration for finance, including secure transactions and reporting systems.

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Retail

Simplify inventory, billing, and customer data with integration for retail.

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SaaS Businesses

Scale faster with API integration for SaaS platforms and tools.

From startups to enterprises, our professional API integration services in India are built to meet the needs of diverse industries.

Your Trusted Partner for API Integration Services

At Carney Technologies Services, we’ve been helping businesses simplify technology for over a decade. From being a leading digital marketing agency in Kolkata to delivering custom API services across India, our mission has always been the same, to make businesses run smarter.

  • 15+ years of experience in digital transformation
  • Skilled team of integration experts and developers
  • Proven track record across industries like ecommerce, healthcare, finance, and retail
  • Local roots in Kolkata, serving clients nationwide and globally

Ready to Simplify Your Business with API Integration Services?

Your tools should work with you, not against you. Our expert team makes it easy with custom API integration services that are secure, scalable, and built around your business goals.

Frequently Asked Questions about API Integration Services

If you’re spending too much time copying data between systems, your apps don’t sync in real time, or your website isn’t connected to tools like payment gateways or CRMs, then API services can save you time, reduce errors, and improve efficiency.

Yes. Our custom API services are designed to connect with your existing software whether it’s a CRM, ERP, payment system, or cloud platform. If your tools support APIs (and most modern ones do), we can integrate them.

Not at all. We plan and test every integration carefully, ensuring a smooth transition without downtime. Our goal is to make your systems work better, without interrupting your day-to-day operations.

Timelines depend on complexity. A simple payment gateway integration can take just a few days, while large projects like CRM and ERP API integrations may take a few weeks. We provide clear estimates before starting.

No problem. Our developers can create custom API solutions or work with alternative methods (like web hooks or middleware) to connect your systems securely.

Costs vary based on the scope of work. Smaller integrations are more affordable, while complex projects take more time and resources. We offer flexible pricing so you pay only for what you need.

Yes. We offer ongoing maintenance and support to ensure your API integration solutions remain secure, up-to-date, and reliable as your business grows.

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