What does 'eXp' stand for?

Also asked as: What does eXp mean? | Where does the name eXp come from? | eXp acronym?

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The 'eXp' in eXp Realty was chosen by founder Glenn Sanford because it's the prefix for many words representing the company's culture: eXceptional, eXperts, eXcellence, eXpectations, eXposure, eXponential, and others.