What Is Asynchronous?
In computer science, asynchrony refers to the occurrence of events that are independent of the actual program. Rather than a universal clock signal, events in an asynchronous system synchronize activities (changes in the system). Asynchronous systems do not depend on foreign signals or messages to perform reliably.
Asynchronous systems are typically built using a modular design. Each module in such a network can operate autonomously while still interacting with others. These interconnected components eventually combine to produce a functioning solution/system.
An asynchronous communication refers to a process in which data is supplied sequentially instead of a continuous stream. Online forums or email are popular examples where individuals send messages at different times.

