Instant Messaging and Presence
Instant messaging (IM) is the capability to communicate instantaneously between two or more people with text-based messages. Presence conveys the ability and willingness of a user to communicate. These two capabilities combine to be the most commonly used UC component in nearly every organization. Understanding how Enterprise IM and Presence evolved will help you understand why it is the core of any UC solution.
IM and Presence has been around since the 1990s. You might remember ICQ and AOL Instant Messenger (AIM). A lot of companies followed suit, and soon there was an explosion of consumer IM providers, all with different protocols and clients. Consumers started to use these consumer IM services for business communications, ...
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