What integration methods have you worked with, which ones are more, which ones are less, what was from scratch, what was a modification?

In my integration practice, I have worked with various methods:

• REST API — the most common method, used most often for data exchange between systems.
• SOAP — encountered less frequently, mainly when integrating with legacy corporate systems.
• Webhooks — used for event-driven integration, when notifications about events in real-time are needed.
• ETL processes — for integrating large volumes of data, such as during migration or database synchronization.
• Message Queues (RabbitMQ, Kafka) — used for asynchronous integration and increasing fault tolerance.

Most experience with REST API and Webhooks, less with SOAP and MQ.

Regarding projects from scratch — participated in developing REST API integration for a new service.

In improvements — optimized existing integration processes, for example, improved error handling and logging.