Custom API Integration & Development Services

API integration services can include discovery, data and field mapping, third-party API integration, custom API development, authentication, webhooks, middleware, error handling, testing, deployment, monitoring and ongoing support. IDS Logic scopes the integration around the source and destination systems, data ownership, business rules, security requirements and operational failure paths.

API integration connects an application to an existing interface so systems can exchange data or trigger actions. API development creates a new interface for a system, application or service. A project can require one or both: for example, IDS Logic may develop a custom API around a legacy platform and then integrate that API with a CRM, ecommerce platform or partner system.

Yes. IDS Logic already publishes third-party API integration as a core service. We assess the provider's documentation, authentication, rate limits, data model, webhook behaviour, error responses and support model, then design the integration so external service behaviour is handled deliberately rather than assumed.

Yes. REST API development is an established IDS Logic capability. We can design and develop REST interfaces, consume third-party REST APIs, map data between systems and implement authentication, validation, versioning, error handling and documentation appropriate to the project.

IDS Logic's published core API capability is REST. Where an existing platform exposes GraphQL, or a project has a clear requirement for it, we can assess the GraphQL integration requirement during discovery and confirm the appropriate implementation approach. We do not introduce GraphQL where REST, webhooks or another simpler interface is the better fit.

Security depends on the systems involved, but common controls include transport encryption, appropriate authentication such as OAuth 2.0 or provider-issued credentials, least-privilege access, secret protection, input validation, webhook verification, request authorisation, logging and controlled environment configuration. The final controls are agreed around the data sensitivity and integration architecture.

Reliable integration engineering requires more than a successful API call. We design for timeouts, retries, rate limits, duplicate requests, invalid data, unavailable dependencies and partial failures. Depending on the architecture, this can include idempotency controls, queues or background processing, exception routes, structured logging, monitoring and operational alerts.

Idempotency means designing an operation so that retrying the same request does not accidentally create duplicate business actions. It is particularly important for payments, orders, bookings and other transactional integrations where network timeouts can make it unclear whether the first request completed successfully.

Often, yes. The right approach depends on what the legacy system exposes. Options may include an existing service interface, database or file exchange, a custom API facade, middleware, scheduled data exchange or, where direct integration is genuinely unavailable, a different automation approach. We assess maintainability and risk before choosing the integration pattern.

Yes. We can review point-to-point integrations, undocumented interfaces, fragile credentials, duplicated mappings, ageing endpoints and missing monitoring, then recommend targeted modernisation. This may include versioned APIs, a middleware layer, clearer contracts, webhook or event patterns, improved authentication, better observability and staged migration from legacy dependencies.

Yes. Integration delivery can include functional and integration testing, invalid-data and failure-path testing, authentication and permission checks, representative load testing where required, production logging and monitoring. IDS Logic also provides a dedicated integration testing service for wider multi-system assurance.

Timescales depend on the number of systems, API quality, documentation, data mapping, authentication, business rules, third-party dependencies, testing requirements and whether new API or middleware development is required. We confirm the integration boundaries and dependencies during discovery before proposing a delivery plan.