What is Serialization

It is the process of saving the state of an object by converting it to a stream of bytes. The object can then be persisted to file, database, or even memory.
Purpose: The purpose of the serialization is to save the state of an object in order to have the ability to recreate the same object when required. It is an important to let the user save work and then be able to continue from that point at a later time. Used to creating a clone of an object