PMF (Product-Market Fit): the moment your product stops needing to be pushed onto people and starts getting pulled out of your hands by a market that genuinely wants it.
Andreessen wrote that in a great market, even a mediocre team can win, and in a bad market, even a great team will lose. He defined PMF as the point where customers buy the product as fast as you can make it, usage grows on its own, and the company races to hire support staff to keep up. The essay is still the standard reference cited by founders and investors almost two decades later.
