Tell us about synchronous and asynchronous integration.

Synchronous integration implies that the sending system waits for a response from the receiving system in real-time. This ensures instant data exchange but can lead to delays if one of the systems is slow or unavailable.

Asynchronous integration means that the sender does not wait for an immediate response and continues its work. Messages can be transmitted through queues or message brokers, which increases resilience and scalability but introduces a delay in data processing.

Example:

• Synchronous: a web service calls another service's API and waits for a response.
• Asynchronous: a service publishes an event to a queue, and another service processes it later.

The choice depends on the response time requirements and system reliability.