The **EventBroker** allows to post events to specific topics, as in a [Publish-Subscribe architecture](https://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern).
The following image shows a simple scenario with two topics (`TOPIC_1` and `TOPIC_2`), two publishers (one that publishes on topic `TOPIC_1` and the other that publishes on both topics) and two subscribers (one subscribed to both topics and one subscribed only to topic `TOPIC_2`).
Then, `Subscriber 1` will receive events that are published both on `TOPIC_1` or on `TOPIC_2`, while `Subscriber 2` will only received the events that are posted on `TOPIC_2`.
The following image shows a simple scenario with two topics (`TOPIC_1` and `TOPIC_2`), two publishers (one that publishes on topic `TOPIC_1` and the other that publishes on both topics) and two subscribers (one subscribed to both topics and one subscribed only to topic `TOPIC_1`).
Then, `Subscriber 2` will receive events that are published both on `TOPIC_1` or on `TOPIC_2`, while `Subscriber 1` will only received the events that are posted on `TOPIC_1`.
