How can interaction between microservices be configured when using Maven in a project?

To configure interaction between microservices in a Maven project, several approaches are usually used:

1. Modularity through Maven modules: Each microservice can be a separate Maven module with its own pom.xml. This allows managing dependencies and building each service separately.

2. Dependency management: If microservices use common libraries or APIs, they can be extracted into separate artifacts and included via dependencies in pom.xml.

3. Using Spring Cloud or other frameworks: For microservice interaction, REST API, gRPC, or messaging through brokers (Kafka, RabbitMQ) are often used. Maven helps manage dependencies of these libraries.

4. Configuring Maven profiles: Different profiles can be created for different environments (dev, test, prod) to configure interaction parameters (e.g., service addresses).

Example of a dependency in pom.xml for a REST client:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

Thus, Maven helps structure the project, manage dependencies and configurations, but the actual interaction between microservices is implemented at the code and infrastructure level.