In conclusion, Messaging and Message Brokers are able to solve today's problems of software engineering such as Interoperability, Heterogeneous Integration, Scalability, and so on. Moreover, Message Brokers give us high level software architectures to make our software systems more abstract.

Today, we have more complicated software systems. Moreover, we have to combine different software systems. Messaging systems is just what we need in our integration of different software systems.

We learned that Messaging has four main components: Producer, Message Broker, Consumer, and the Message. Message Broker was our manager of the messaging system; however, we had to define its standards and functionalities. Then it came to AMQP. AMQP just clarifies how Message Broker works, how clients (consumers and producers) talk with the server, and how each components of the AMQP interact with each other.

From now on, we are starting the functionalities of the RabbitMQ Server, beginning with Chapter 4, Clustering and High Availability.