What is custom API integration?

Custom API integration is the process of connecting two or more software systems so they can exchange data automatically. Instead of manually transferring information between platforms, an API integration allows your website, mobile app, ecommerce store or business system to communicate directly with payment gateways, logistics providers, ERP, CRM, accounting software or any third-party service with an available API.

How much does API integration cost in Malaysia?

API integration in Malaysia typically starts from RM 5,000 for a single straightforward third-party connection and ranges from RM 15,000 to RM 40,000 or more for complex multi-system integrations with custom middleware, error handling, data transformation and ongoing sync logic. UNO scopes each integration based on the number of systems, data complexity and reliability requirements.

What systems can you integrate?

UNO integrates payment gateways (iPay88, Billplz, Stripe, PayPal), logistics providers (Lalamove, J&T, Poslaju), ERP and accounting systems (SQL Account, Autocount, Xero, QuickBooks), CRM platforms, government systems, HRMS platforms, SMS and email services, social login providers, map services and any system with a documented REST or SOAP API.

What is the difference between API integration and API development?

API integration connects your system to an existing third-party API — for example, connecting your ecommerce store to a payment gateway or courier service. API development means building your own API so other systems or mobile apps can connect to your platform. UNO handles both: integrating third-party APIs into your system and building custom APIs for your own platform.

How long does API integration take?

A simple single API integration typically takes 2 to 4 weeks. A complex multi-system integration with custom data mapping, error handling and testing takes 4 to 10 weeks depending on API documentation quality, third-party response times during testing and the complexity of the data transformation required.

API connectivity network illustration showing connected systems and data integration

Custom API Integration Services in Kuala Lumpur

Custom API integration connects two or more software systems so they can exchange data automatically, eliminating manual data entry between platforms. Instead of logging into separate systems, an API integration lets your website, mobile app, ecommerce store or business system communicate directly with payment gateways, logistics providers, ERP, CRM or any third-party service.

UNO helps Malaysian businesses connect websites, mobile apps, ecommerce platforms, payment gateways, ERP, CRM and third-party systems through secure custom API integration and API development.

Our team plans the integration flow, maps the data, develops the API layer or middleware, tests the connection, handles error scenarios and supports your team after launch.

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API Development for Connected Business Operations

Many companies rely on separate systems for sales, operations, finance, customer service, fulfilment and reporting. Without proper integration, teams spend time copying data, checking records manually and fixing avoidable mistakes.

We design API integration around your actual workflow. Whether you need a customer portal connected to a CRM, an ecommerce checkout connected to a payment gateway, or a mobile app connected to an ERP, UNO builds the connection layer that keeps your data moving reliably.

Custom API Integration Services

We support both API integration and API development, from planning and data mapping to middleware, authentication, testing, monitoring and post-launch support.

Third-Party API Integration

Connect websites, mobile apps or internal systems with payment gateways, logistics providers, email tools, CRMs, ERPs and external platforms.

Custom API Development

Build secure API endpoints for web applications, mobile apps, partner portals or business platforms that need controlled data access.

Middleware and Data Sync

Create a middleware layer to transform data, validate requests, schedule sync jobs, manage logs and reduce dependency between systems.

API Security and Testing

Apply authentication, permission checks, validation, error handling, sandbox testing and production checks before launch.

Popular Integration Categories

We frequently connect payment gateways, courier services and custom business systems so your website, ecommerce platform, mobile app or internal portal works as one connected ecosystem.

Payment Gateway

Courier Services

Custom System Integrations

API Integration Company in Malaysia

UNO is based in Kuala Lumpur and works with SMEs, enterprises and organisations across Malaysia that need dependable API integration between business-critical systems.

Our experience across web applications, mobile apps, ecommerce platforms and custom portals allows us to plan integrations from both the technical and business workflow perspective.

Our API Integration Process

A reliable integration needs more than connecting two endpoints. We document the data flow, handle exceptions and test the real business scenarios before launch.

1. Discovery and API Review

We review business rules, available API documentation, data fields, security requirements and user journey.

2. Flow and Data Mapping

We define what data moves, when it moves, how errors are handled and which system is the source of truth.

3. Development and Testing

We build the integration, test sandbox responses, validate payloads, handle exceptions and prepare launch checks.

4. Launch and Support

We monitor the production rollout, troubleshoot issues and support future enhancement as business needs change.

Custom API Integration FAQs

Quick answers to common questions about API integration, API development and system connectivity projects.

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Custom API integration connects different systems so they can exchange data securely and automatically, such as a website, mobile app, ecommerce platform, CRM, ERP, payment gateway or logistics system.

Yes. UNO is based in Kuala Lumpur and provides API integration and API development services for Malaysian businesses that need reliable system connectivity.

Yes. We can integrate payment gateways, CRM, ERP, ecommerce platforms, mobile apps, web portals, logistics providers and other third-party systems based on the available API documentation and business requirements.

Yes. If your system does not have an existing API, we can assess the system structure and build a suitable API layer or middleware where technically possible.

We apply suitable authentication, access controls, validation, error handling, logging and secure data exchange practices based on the type of integration and sensitivity of the data involved.

Need to Connect Your Business Systems?

Talk to UNO about your API integration requirements. We can help review your workflow, API documentation, third-party systems and project scope before recommending the right integration approach.

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