How was the integration between the systems implemented? Describe the technical details.

Integration between systems is usually implemented using APIs, message exchanges, or middleware. The technical details depend on the architecture and requirements.

Example of integration implementation:

• Using RESTful API for data exchange in JSON format.
• Authentication via OAuth 2.0 for security.
• Error handling and retries during temporary failures.
• Asynchronous exchange through message queues (e.g., RabbitMQ or Kafka) to enhance reliability and scalability.

Example of a technical description:

"For integration between CRM and order management system, we used REST API with JSON. CRM sends requests to create and update orders, using OAuth 2.0 for authentication. To handle large volumes of data and ensure reliability, a RabbitMQ message queue is configured, through which order status events are transmitted. In case of errors, retry logic and administrator notifications are implemented.""