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Draft:Unified APIs

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A Unified API (also called a Universal API or Composite API) is a software abstraction that provides a single, standardized interface to connect with multiple external applications or services within a particular category (e.g., HRIS, CRM, payment gateways). Rather than building separate integrations for each individual service provider, developers can interact with a single API that handles the mapping, authentication, and data normalization behind the scenes.

Unified APIs are particularly common in software categories with a high degree of fragmentation and diverse implementations, helping simplify integration workflows for developers and accelerate product development.

This fragmentation creates significant challenges for developers building integrations, especially when trying to support multiple tools in the same category.

Unified APIs emerged as a solution to reduce the burden of building and maintaining such integrations. They act as a middle layer that handles:

- Data model normalization

- Authentication and token refresh logic

- API schema mapping

- Webhook/event handling

- Error standardization and retries

Benefits that unified APIs provide -

Reduced engineering effort: Developers avoid writing and maintaining dozens of one-off integrations.

Faster time to market: Product teams can support many integrations through a single interface.

Improved maintainability: When third-party APIs change, the Unified API provider can handle updates centrally.

Standardized error handling: Common error codes and messaging improve debugging and reliability.

Use Cases Unified APIs are often used by:

HRTech platforms needing to integrate with multiple HRIS and payroll systems.

Fintech and accounting SaaS products requiring connectivity with ERP tools.

Sales enablement tools connecting with CRMs and communication platforms.

Customer support tools integrating with ticketing and knowledge base systems.

References

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