What are components of a basic queueing model?

A basic queueing model typically consists of three main components: the arrival process, which describes how entities arrive at the queue (often modeled using a stochastic process like a Poisson process); the service mechanism, which details how entities are served, including service times and the number of servers; and the queue discipline, which defines the order in which entities are served (such as first-come, first-served). Additionally, the system may include considerations for the system capacity and customer behavior.