API Integration for Businesses
Connect your systems in real time and let your data flow automatically.
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Healthcare We made every system in the business talk to each other
The Challenge A national healthcare provider had a legacy 2019 system that could not talk to the rest of their stack. Client data lived in their CRM. Invoicing happened in their finance app. Clinical measurements sat in 33 standalone databases, one per clinician. Claims went through a closed government portal with no API. Every handoff between systems was manual, every reconciliation a workaround.
The Solution Extranet Systems delivered a unified platform with deep, purpose-built integrations across the provider’s entire operational stack. Bi-directional CRM sync kept client records and call outcomes consistent across sales and clinical teams. The finance app handled invoice generation and payment workflows seamlessly. All 33 standalone clinical databases were consolidated into one cloud-hosted, region-segregated source of truth. Address validation, document storage, and AI services were integrated through a modular architecture designed to add new connectors without rebuilding the core.
The Outcome The provider eliminated reliance on its 2019 legacy system, consolidated 33 standalone databases into a single source of truth, and removed the manual handoffs that previously bridged disconnected systems. They were replaced with real-time, audited, bi-directional data flow.
"We went from three disconnected tools to one unified system in 12 weeks. The team hasn't looked back — and neither have we."
Our Happy Clients
Hear from satisfied business owners and executives who've trusted Extranet Systems with their business challenges.
Extranet Systems provides very professional service on fulfilling our IT requirements. Having them on board really reduced a lot of our stress on looking after the IT infrastructure.
Working with Extranet Systems, their Software development, and integration with two of our other Software platforms went very smoothly, they were able to come back with something in no time.
We recently engaged Extranet Systems to help implement AI into our business. They were very professional and had constant communication throughout the entire project.
Extranet gave us a level of integration we didn't think was possible. Night and day difference. Thank you Extranet.
Systems That Talk to Each Other
Disconnected systems slow everything down. API integration connects your applications in real time, automating data flow and eliminating manual handling across your business.
Connected Systems
We connect your CRM, ERP, databases, and third-party platforms through secure, scalable APIs so data moves instantly and accurately.
Built for Enterprise
Our developers specialise in building robust API integrations that reduce manual overhead and create a technology environment that works as one.
Questions
Everything you need to know about building custom software with us
An API (Application Programming Interface) is a set of rules that defines how two software systems can communicate with each other. API integration is the process of connecting your systems through their APIs so they can share data and trigger actions automatically. When one system updates a record, completes a transaction, or receives a request, the API integration passes that information to connected systems in real time without manual intervention.
We work with REST APIs, SOAP APIs, GraphQL APIs, and JSON-based APIs, as well as webhooks and event-driven integration patterns. We also have experience connecting to legacy systems that use non-standard or proprietary API formats. We select the right approach based on the capabilities of the systems involved.
REST is the modern standard for API design, using simple HTTP requests to exchange data in lightweight formats like JSON. It is fast, flexible, and widely supported by modern platforms. SOAP is an older, more rigid protocol that uses XML and is still found in many legacy enterprise systems. We work with both, selecting the right approach based on what your systems support.
Webhooks are event-driven connections that push data from one system to another the moment something happens, rather than requiring one system to repeatedly check for updates. They are more efficient than polling-based integrations and are ideal for scenarios where you need near-instant notification of events, such as payment confirmations, order status changes, or new customer registrations.
We implement industry-standard authentication mechanisms including OAuth 2.0, API keys, and token-based authentication to ensure only authorised systems can access your APIs. We also implement HTTPS encryption, input validation, rate limiting, and webhook signature verification to protect every integration from unauthorised access and abuse.
Yes. We provide continuous monitoring, issue resolution, and support to keep your API integrations running reliably as your systems update, your data volumes grow, and your business requirements evolve over time.
Connect Better. Work Smarter.
From internal systems to customer platforms — we deliver API integrations that connect your tools, streamline workflows, and enable seamless data exchange across all use cases.
A process built around you, not the other way around
We don't disappear after kickoff and resurface six months later with a finished product. Every stage is collaborative, transparent, and designed to keep you in control.
REST API Integration
Modern REST API connections that enable real-time, lightweight data exchange between your systems.
SOAP and Legacy API Support
Integration with older SOAP-based APIs and legacy systems that require non-standard connection approaches.
Webhook Integration
Event-driven connections that push data between systems the moment something changes, without polling.
Authentication and Security
OAuth, API keys, and token-based authentication implemented to keep every integration secure and compliant.
Error Handling and Retry Logic
Robust error detection and automatic retry mechanisms that keep integrations running when issues occur.
API Documentation and Monitoring
Clear documentation and ongoing monitoring to keep your integrations transparent, maintainable, and reliable.
The Extranet API Integration Advantage
We bring deep API integration expertise across a broad range of platforms and technologies, delivering reliable, well-documented integrations with ongoing support built into every engagement.
Innovate
Beyond
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Your web application should work the way you do — not the other way around. Let's build something that actually fits.
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