Processes in Elixir aren't solely used to run certain tasks concurrently. Often, they are also used as entities that maintain state. These processes frequently run for a long time (or possibly forever), and know how to handle a certain type of requests. Via message passing, other processes can query and/or modify the internal state of these processes. These types of processes are frequently called Server Processes.
As we stated at the beginning of this chapter, inside the BEAM, a process is the unit of concurrent execution. This means that multiple server processes may run concurrently, which is important for scalability and fault tolerance.
Let's remind you that there's no loop construct in Elixir. As we've depicted ...
