What integrations have you designed and how do you describe them?

I designed integrations between different systems, such as between internal services and external APIs.

To describe integrations, I use the following approaches:

• Data Flow Diagrams (DFD) — show how data moves between systems.
• API specifications — describe REST or gRPC interfaces using OpenAPI (Swagger) or protobuf.
• Technical specifications and documentation — include descriptions of protocols, message formats, security requirements, and error handling.
• Request and response examples — help developers understand how to use the integration more quickly.

This comprehensive approach ensures clarity and simplifies the development and maintenance of integration solutions.