How did you describe integrations between systems? How did you set tasks for developers regarding integrations?

To describe integrations between systems, I used the following approaches:

• Data Flow Diagrams — show how data moves between systems.
• API specifications — detail endpoints, request and response formats, and interaction protocols.
• Technical specifications (TS) with clear descriptions of use scenarios, security requirements, limitations, and SLA.

When setting tasks for developers regarding integrations, I:

1. Formulated a clear description of the integration goal and business requirements.
2. Provided documentation with examples of requests and responses.
3. Indicated acceptance criteria and test scenarios.
4. Discussed potential risks and ways to minimize them.
5. Used task tracking systems (e.g., Jira) with detailed descriptions and attachments.

This approach helps avoid misunderstandings and speeds up the development process of integrations.