What does IM stand for in online communication?

In the context of online communication, IM stands for Instant Messaging. This term refers to a form of real-time text-based communication between two or more users over the internet. Instant Messaging allows users to send and receive messages almost instantly, facilitating quick and informal conversations, similar to chatting. This technology has evolved over the years and integrates various features such as the ability to send files, images, and links, as well as to engage in voice and video calls.

The other options do have their own meanings in different contexts, but they do not pertain directly to the conventional use of the term IM in communication. Interconnected Media relates more to media sharing and platforms, Information Management focuses on the organization and usage of information, and Interactive Module pertains to a component of software or online courses. Hence, Instant Messaging is the most appropriate answer in this scenario.