You’ll recognize these acronyms as attempts to define whether or not a meeting has been effective. Has it satisfied the specific needs of both meeting owners and meeting attendees (customers)? How do these measurement methods work? Which are easier or more difficult to implement in the real world of a meeting professional trying to determine how well a meeting performed? Do some apply only to certain types of meetings?
The following is my attempt to provide an overview without getting into boring nitty-gritty. 
First, it is important to point out that while there is a good deal of overlap among them, each has a specific point of view about what is central to the measurement process.   
 
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