What does "IM" stand for in digital communication?

In the context of digital communication, "IM" stands for Instant Messaging. This refers to the real-time exchange of text messages between two or more people using a software application, allowing for immediate communication, often similar to a conversation. Instant messaging services have become widely used for personal and professional interactions, as they enable individuals to send quick messages, share files, and often include features such as video calls and group chats.

The other options, while they may represent relevant concepts in technology and communications, do not accurately define what "IM" specifically signifies in the realm of digital communication.