What methods can be used to ensure interaction between microservices in architecture?

Methods commonly used for interaction between microservices include:

• HTTP REST API — the most common way, where services communicate via HTTP requests.
• gRPC — a high-performance protocol with support for contracts through protobuf.
• Messaging through brokers (RabbitMQ, Kafka) — asynchronous interaction via message queues.
• Event-driven architecture — services respond to events published by other services.

The choice depends on requirements for performance, reliability, and data consistency.